cpython-lru_cache-weakref: Lib/subprocess.py annotate

annotate Lib/subprocess.py @ 71285:8bc9dbc61ba6 3.2

Issue #12326: document the recommended idiom for checking sys.platform on Unix systems. Also, point to the various alternatives.

author	Antoine Pitrou <solipsis@pitrou.net>
date	Sat, 09 Jul 2011 15:54:23 +0200
parents	dcfacc2d93b4
children	5cc536fbd7c1 42e23db3ddfc

rev	line source
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1 # subprocess - Subprocesses with accessible I/O streams
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	2 #
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	3 # For more information about this module, see PEP 324.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	4 #
35633 45aaa436b945 Changed license header: Now simply referring to PSF. This closes bug Peter Astrand <astrand@lysator.liu.se> parents: 34818 diff changeset	5 # Copyright (c) 2003-2005 by Peter Astrand <astrand@lysator.liu.se>
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	6 #
34587 e9ec2ce340fd Added copyright notice: Peter Astrand <astrand@lysator.liu.se> parents: 34575 diff changeset	7 # Licensed to PSF under a Contributor Agreement.
35633 45aaa436b945 Changed license header: Now simply referring to PSF. This closes bug Peter Astrand <astrand@lysator.liu.se> parents: 34818 diff changeset	8 # See http://www.python.org/2.4/license for licensing details.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	9
33776 c5d951a0e0c3 Fix docstring formatting of escape sequences. Raymond Hettinger <python@rcn.com> parents: 33770 diff changeset	10 r"""subprocess - Subprocesses with accessible I/O streams
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	11
33770 c6aac03474c5 return codes are available on all platforms, not just on Unix Fredrik Lundh <fredrik@pythonware.com> parents: 33751 diff changeset	12 This module allows you to spawn processes, connect to their
c6aac03474c5 return codes are available on all platforms, not just on Unix Fredrik Lundh <fredrik@pythonware.com> parents: 33751 diff changeset	13 input/output/error pipes, and obtain their return codes. This module
c6aac03474c5 return codes are available on all platforms, not just on Unix Fredrik Lundh <fredrik@pythonware.com> parents: 33751 diff changeset	14 intends to replace several other, older modules and functions, like:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	15
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	16 os.system
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	17 os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	18
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	19 Information about how the subprocess module can be used to replace these
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	20 modules and functions can be found below.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	21
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	22
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	23
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	24 Using the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	25 ===========================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	26 This module defines one class called Popen:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	27
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	28 class Popen(args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	29 stdin=None, stdout=None, stderr=None,
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	30 preexec_fn=None, close_fds=True, shell=False,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	31 cwd=None, env=None, universal_newlines=False,
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	32 startupinfo=None, creationflags=0,
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	33 restore_signals=True, start_new_session=False, pass_fds=()):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	34
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	35
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	36 Arguments are:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	37
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	38 args should be a string, or a sequence of program arguments. The
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	39 program to execute is normally the first item in the args sequence or
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	40 string, but can be explicitly set by using the executable argument.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	41
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	42 On POSIX, with shell=False (default): In this case, the Popen class
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	43 uses os.execvp() to execute the child program. args should normally
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	44 be a sequence. A string will be treated as a sequence with the string
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	45 as the only item (the program to execute).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	46
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	47 On POSIX, with shell=True: If args is a string, it specifies the
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	48 command string to execute through the shell. If args is a sequence,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	49 the first item specifies the command string, and any additional items
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	50 will be treated as additional shell arguments.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	51
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	52 On Windows: the Popen class uses CreateProcess() to execute the child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	53 program, which operates on strings. If args is a sequence, it will be
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	54 converted to a string using the list2cmdline method. Please note that
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	55 not all MS Windows applications interpret the command line the same
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	56 way: The list2cmdline is designed for applications using the same
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	57 rules as the MS C runtime.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	58
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	59 bufsize, if given, has the same meaning as the corresponding argument
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	60 to the built-in open() function: 0 means unbuffered, 1 means line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	61 buffered, any other positive value means use a buffer of
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	62 (approximately) that size. A negative bufsize means to use the system
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	63 default, which usually means fully buffered. The default value for
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	64 bufsize is 0 (unbuffered).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	65
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	66 stdin, stdout and stderr specify the executed programs' standard
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	67 input, standard output and standard error file handles, respectively.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	68 Valid values are PIPE, an existing file descriptor (a positive
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	69 integer), an existing file object, and None. PIPE indicates that a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	70 new pipe to the child should be created. With None, no redirection
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	71 will occur; the child's file handles will be inherited from the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	72 parent. Additionally, stderr can be STDOUT, which indicates that the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	73 stderr data from the applications should be captured into the same
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	74 file handle as for stdout.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	75
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	76 On POSIX, if preexec_fn is set to a callable object, this object will be
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	77 called in the child process just before the child is executed. The use
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	78 of preexec_fn is not thread safe, using it in the presence of threads
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	79 could lead to a deadlock in the child process before the new executable
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	80 is executed.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	81
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	82 If close_fds is true, all file descriptors except 0, 1 and 2 will be
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	83 closed before the child process is executed. The default for close_fds
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	84 varies by platform: Always true on POSIX. True when stdin/stdout/stderr
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	85 are None on Windows, false otherwise.
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	86
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	87 pass_fds is an optional sequence of file descriptors to keep open between the
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	88 parent and child. Providing any pass_fds implicitly sets close_fds to true.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	89
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	90 if shell is true, the specified command will be executed through the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	91 shell.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	92
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	93 If cwd is not None, the current directory will be changed to cwd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	94 before the child is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	95
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	96 On POSIX, if restore_signals is True all signals that Python sets to
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	97 SIG_IGN are restored to SIG_DFL in the child process before the exec.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	98 Currently this includes the SIGPIPE, SIGXFZ and SIGXFSZ signals. This
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	99 parameter does nothing on Windows.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	100
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	101 On POSIX, if start_new_session is True, the setsid() system call will be made
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	102 in the child process prior to executing the command.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	103
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	104 If env is not None, it defines the environment variables for the new
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	105 process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	106
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	107 If universal_newlines is true, the file objects stdout and stderr are
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	108 opened as a text files, but lines may be terminated by any of '\n',
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	109 the Unix end-of-line convention, '\r', the old Macintosh convention or
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	110 '\r\n', the Windows convention. All of these external representations
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	111 are seen as '\n' by the Python program. Note: This feature is only
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	112 available if Python is built with universal newline support (the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	113 default). Also, the newlines attribute of the file objects stdout,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	114 stdin and stderr are not updated by the communicate() method.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	115
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	116 The startupinfo and creationflags, if given, will be passed to the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	117 underlying CreateProcess() function. They can specify things such as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	118 appearance of the main window and priority for the new process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	119 (Windows only)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	120
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	121
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	122 This module also defines some shortcut functions:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	123
34111 73b09c2b788b Changed signature of call function to avoid confusion: this 'args' is not the same as the one to the Popen constructor Peter Astrand <astrand@lysator.liu.se> parents: 34052 diff changeset	124 call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	125 Run command with arguments. Wait for command to complete, then
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	126 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	127
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	128 The arguments are the same as for the Popen constructor. Example:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	129
59471 ac80884ddcc3 Merged revisions 78736,78759,78761,78767,78788-78789 via svnmerge from Florent Xicluna <florent.xicluna@gmail.com> parents: 59207 diff changeset	130 >>> retcode = subprocess.call(["ls", "-l"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	131
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	132 check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	133 Run command with arguments. Wait for command to complete. If the
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	134 exit code was zero then return, otherwise raise
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	135 CalledProcessError. The CalledProcessError object will have the
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	136 return code in the returncode attribute.
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	137
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	138 The arguments are the same as for the Popen constructor. Example:
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	139
59471 ac80884ddcc3 Merged revisions 78736,78759,78761,78767,78788-78789 via svnmerge from Florent Xicluna <florent.xicluna@gmail.com> parents: 59207 diff changeset	140 >>> subprocess.check_call(["ls", "-l"])
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	141 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	142
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	143 getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	144 Return (status, output) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	145
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	146 Execute the string 'cmd' in a shell with os.popen() and return a 2-tuple
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	147 (status, output). cmd is actually run as '{ cmd ; } 2>&1', so that the
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	148 returned output will contain output or error messages. A trailing newline
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	149 is stripped from the output. The exit status for the command can be
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	150 interpreted according to the rules for the C function wait(). Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	151
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	152 >>> subprocess.getstatusoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	153 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	154 >>> subprocess.getstatusoutput('cat /bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	155 (256, 'cat: /bin/junk: No such file or directory')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	156 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	157 (256, 'sh: /bin/junk: not found')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	158
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	159 getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	160 Return output (stdout or stderr) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	161
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	162 Like getstatusoutput(), except the exit status is ignored and the return
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	163 value is a string containing the command's output. Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	164
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	165 >>> subprocess.getoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	166 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	167
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	168 check_output(popenargs, *kwargs):
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	169 Run command with arguments and return its output as a byte string.
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	170
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	171 If the exit code was non-zero it raises a CalledProcessError. The
a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	172 CalledProcessError object will have the return code in the returncode
a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	173 attribute and output in the output attribute.
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	174
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	175 The arguments are the same as for the Popen constructor. Example:
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	176
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	177 >>> output = subprocess.check_output(["ls", "-l", "/dev/null"])
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	178
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	179
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	180 Exceptions
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	181 ----------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	182 Exceptions raised in the child process, before the new program has
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	183 started to execute, will be re-raised in the parent. Additionally,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	184 the exception object will have one extra attribute called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	185 'child_traceback', which is a string containing traceback information
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	186 from the childs point of view.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	187
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	188 The most common exception raised is OSError. This occurs, for
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	189 example, when trying to execute a non-existent file. Applications
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	190 should prepare for OSErrors.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	191
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	192 A ValueError will be raised if Popen is called with invalid arguments.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	193
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	194 check_call() and check_output() will raise CalledProcessError, if the
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	195 called process returns a non-zero return code.
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	196
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	197
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	198 Security
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	199 --------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	200 Unlike some other popen functions, this implementation will never call
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	201 /bin/sh implicitly. This means that all characters, including shell
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	202 metacharacters, can safely be passed to child processes.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	203
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	204
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	205 Popen objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	206 =============
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	207 Instances of the Popen class have the following methods:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	208
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	209 poll()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	210 Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	211 attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	212
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	213 wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	214 Wait for child process to terminate. Returns returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	215
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	216 communicate(input=None)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	217 Interact with process: Send data to stdin. Read data from stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	218 and stderr, until end-of-file is reached. Wait for process to
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	219 terminate. The optional input argument should be a string to be
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	220 sent to the child process, or None, if no data should be sent to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	221 the child.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	222
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	223 communicate() returns a tuple (stdout, stderr).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	224
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	225 Note: The data read is buffered in memory, so do not use this
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	226 method if the data size is large or unlimited.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	227
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	228 The following attributes are also available:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	229
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	230 stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	231 If the stdin argument is PIPE, this attribute is a file object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	232 that provides input to the child process. Otherwise, it is None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	233
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	234 stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	235 If the stdout argument is PIPE, this attribute is a file object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	236 that provides output from the child process. Otherwise, it is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	237 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	238
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	239 stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	240 If the stderr argument is PIPE, this attribute is file object that
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	241 provides error output from the child process. Otherwise, it is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	242 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	243
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	244 pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	245 The process ID of the child process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	246
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	247 returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	248 The child return code. A None value indicates that the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	249 hasn't terminated yet. A negative value -N indicates that the
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	250 child was terminated by signal N (POSIX only).
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	251
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	252
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	253 Replacing older functions with the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	254 ====================================================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	255 In this section, "a ==> b" means that b can be used as a replacement
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	256 for a.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	257
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	258 Note: All functions in this section fail (more or less) silently if
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	259 the executed program cannot be found; this module raises an OSError
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	260 exception.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	261
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	262 In the following examples, we assume that the subprocess module is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	263 imported with "from subprocess import *".
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	264
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	265
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	266 Replacing /bin/sh shell backquote
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	267 ---------------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	268 output=`mycmd myarg`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	269 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	270 output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	271
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	272
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	273 Replacing shell pipe line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	274 -------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	275 output=`dmesg \| grep hda`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	276 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	277 p1 = Popen(["dmesg"], stdout=PIPE)
34050 fd1be494c31b Corrected example for replacing shell pipeline. Fixes bug 1073790. Peter Astrand <astrand@lysator.liu.se> parents: 33929 diff changeset	278 p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	279 output = p2.communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	280
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	281
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	282 Replacing os.system()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	283 ---------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	284 sts = os.system("mycmd" + " myarg")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	285 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	286 p = Popen("mycmd" + " myarg", shell=True)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	287 pid, sts = os.waitpid(p.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	288
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	289 Note:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	290
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	291 * Calling the program through the shell is usually not required.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	292
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	293 * It's easier to look at the returncode attribute than the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	294 exitstatus.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	295
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	296 A more real-world example would look like this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	297
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	298 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	299 retcode = call("mycmd" + " myarg", shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	300 if retcode < 0:
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	301 print("Child was terminated by signal", -retcode, file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	302 else:
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	303 print("Child returned", retcode, file=sys.stderr)
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	304 except OSError as e:
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	305 print("Execution failed:", e, file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	306
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	307
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	308 Replacing os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	309 -------------------
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	310 P_NOWAIT example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	311
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	312 pid = os.spawnlp(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	313 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	314 pid = Popen(["/bin/mycmd", "myarg"]).pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	315
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	316
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	317 P_WAIT example:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	318
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	319 retcode = os.spawnlp(os.P_WAIT, "/bin/mycmd", "mycmd", "myarg")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	320 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	321 retcode = call(["/bin/mycmd", "myarg"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	322
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	323
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	324 Vector example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	325
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	326 os.spawnvp(os.P_NOWAIT, path, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	327 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	328 Popen([path] + args[1:])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	329
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	330
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	331 Environment example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	332
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	333 os.spawnlpe(os.P_NOWAIT, "/bin/mycmd", "mycmd", "myarg", env)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	334 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	335 Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	336 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	337
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	338 import sys
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	339 mswindows = (sys.platform == "win32")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	340
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	341 import io
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	342 import os
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	343 import traceback
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	344 import gc
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	345 import signal
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	346 import builtins
66676 b37da60c9072 issue7213 + issue2320: Cause a DeprecationWarning if the close_fds argument is Gregory P. Smith <greg@mad-scientist.com> parents: 66622 diff changeset	347 import warnings
69154 158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	348 import errno
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	349
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	350 # Exception classes used by this module.
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	351 class CalledProcessError(Exception):
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	352 """This exception is raised when a process run by check_call() or
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	353 check_output() returns a non-zero exit status.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	354 The exit status will be stored in the returncode attribute;
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	355 check_output() will also store the output in the output attribute.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	356 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	357 def __init__(self, returncode, cmd, output=None):
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	358 self.returncode = returncode
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	359 self.cmd = cmd
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	360 self.output = output
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	361 def __str__(self):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	362 return "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	363
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	364
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	365 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	366 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	367 import msvcrt
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	368 import _subprocess
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	369 class STARTUPINFO:
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	370 dwFlags = 0
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	371 hStdInput = None
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	372 hStdOutput = None
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	373 hStdError = None
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	374 wShowWindow = 0
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	375 class pywintypes:
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	376 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	377 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	378 import select
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	379 _has_poll = hasattr(select, 'poll')
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	380 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	381 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	382
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	383 try:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	384 import _posixsubprocess
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	385 except ImportError:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	386 _posixsubprocess = None
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	387 warnings.warn("The _posixsubprocess module is not being used. "
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	388 "Child process reliability may suffer if your "
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	389 "program uses threads.", RuntimeWarning)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	390
55626 fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	391 # When select or poll has indicated that the file is writable,
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	392 # we can write up to _PIPE_BUF bytes without risk of blocking.
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	393 # POSIX defines PIPE_BUF as >= 512.
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	394 _PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	395
67310 a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	396 _FD_CLOEXEC = getattr(fcntl, 'FD_CLOEXEC', 1)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	397
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	398 def _set_cloexec(fd, cloexec):
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	399 old = fcntl.fcntl(fd, fcntl.F_GETFD)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	400 if cloexec:
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	401 fcntl.fcntl(fd, fcntl.F_SETFD, old \| _FD_CLOEXEC)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	402 else:
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	403 fcntl.fcntl(fd, fcntl.F_SETFD, old & ~_FD_CLOEXEC)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	404
66868 de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	405 if _posixsubprocess:
de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	406 _create_pipe = _posixsubprocess.cloexec_pipe
de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	407 else:
de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	408 def _create_pipe():
de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	409 fds = os.pipe()
67310 a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	410 _set_cloexec(fds[0], True)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	411 _set_cloexec(fds[1], True)
66868 de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	412 return fds
55626 fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	413
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	414 __all__ = ["Popen", "PIPE", "STDOUT", "call", "check_call", "getstatusoutput",
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	415 "getoutput", "check_output", "CalledProcessError"]
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	416
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	417 if mswindows:
69690 4c3ae7d04664 merge Brian Curtin <brian@python.org> parents: 69155 69689 diff changeset	418 from _subprocess import (CREATE_NEW_CONSOLE, CREATE_NEW_PROCESS_GROUP,
69689 80971f71b0d9 Further fix #7838. CREATE_NEW_CONSOLE was exposed, but none of the Brian Curtin <brian@python.org> parents: 69154 diff changeset	419 STD_INPUT_HANDLE, STD_OUTPUT_HANDLE,
80971f71b0d9 Further fix #7838. CREATE_NEW_CONSOLE was exposed, but none of the Brian Curtin <brian@python.org> parents: 69154 diff changeset	420 STD_ERROR_HANDLE, SW_HIDE,
80971f71b0d9 Further fix #7838. CREATE_NEW_CONSOLE was exposed, but none of the Brian Curtin <brian@python.org> parents: 69154 diff changeset	421 STARTF_USESTDHANDLES, STARTF_USESHOWWINDOW)
70050 654d473f2951 normalize whitespace. Gregory P. Smith <greg@krypto.org> parents: 70049 diff changeset	422
69690 4c3ae7d04664 merge Brian Curtin <brian@python.org> parents: 69155 69689 diff changeset	423 __all__.extend(["CREATE_NEW_CONSOLE", "CREATE_NEW_PROCESS_GROUP",
69689 80971f71b0d9 Further fix #7838. CREATE_NEW_CONSOLE was exposed, but none of the Brian Curtin <brian@python.org> parents: 69154 diff changeset	424 "STD_INPUT_HANDLE", "STD_OUTPUT_HANDLE",
80971f71b0d9 Further fix #7838. CREATE_NEW_CONSOLE was exposed, but none of the Brian Curtin <brian@python.org> parents: 69154 diff changeset	425 "STD_ERROR_HANDLE", "SW_HIDE",
80971f71b0d9 Further fix #7838. CREATE_NEW_CONSOLE was exposed, but none of the Brian Curtin <brian@python.org> parents: 69154 diff changeset	426 "STARTF_USESTDHANDLES", "STARTF_USESHOWWINDOW"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	427 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	428 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	429 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	430 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	431
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	432 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	433
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	434 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	435 for inst in _active[:]:
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	436 res = inst._internal_poll(_deadstate=sys.maxsize)
39646 ce23d86732b0 Fix another comparison between None and 0. Guido van Rossum <guido@python.org> parents: 39442 diff changeset	437 if res is not None and res >= 0:
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	438 try:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	439 _active.remove(inst)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	440 except ValueError:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	441 # This can happen if two threads create a new Popen instance.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	442 # It's harmless that it was already removed, so ignore.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	443 pass
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	444
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	445 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	446 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	447
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	448
59209 1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	449 def _eintr_retry_call(func, *args):
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	450 while True:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	451 try:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	452 return func(*args)
71228 dcfacc2d93b4 Issue #12493: subprocess: communicate() handles EINTR Victor Stinner <victor.stinner@haypocalc.com> parents: 70921 diff changeset	453 except (OSError, IOError) as e:
59209 1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	454 if e.errno == errno.EINTR:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	455 continue
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	456 raise
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	457
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	458
34111 73b09c2b788b Changed signature of call function to avoid confusion: this 'args' is not the same as the one to the Popen constructor Peter Astrand <astrand@lysator.liu.se> parents: 34052 diff changeset	459 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	460 """Run command with arguments. Wait for command to complete, then
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	461 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	462
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	463 The arguments are the same as for the Popen constructor. Example:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	464
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	465 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	466 """
34111 73b09c2b788b Changed signature of call function to avoid confusion: this 'args' is not the same as the one to the Popen constructor Peter Astrand <astrand@lysator.liu.se> parents: 34052 diff changeset	467 return Popen(popenargs, *kwargs).wait()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	468
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	469
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	470 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	471 """Run command with arguments. Wait for command to complete. If
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	472 the exit code was zero then return, otherwise raise
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	473 CalledProcessError. The CalledProcessError object will have the
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	474 return code in the returncode attribute.
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	475
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	476 The arguments are the same as for the Popen constructor. Example:
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	477
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	478 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	479 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	480 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	481 if retcode:
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	482 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	483 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	484 cmd = popenargs[0]
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	485 raise CalledProcessError(retcode, cmd)
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	486 return 0
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	487
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	488
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	489 def check_output(popenargs, *kwargs):
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	490 r"""Run command with arguments and return its output as a byte string.
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	491
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	492 If the exit code was non-zero it raises a CalledProcessError. The
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	493 CalledProcessError object will have the return code in the returncode
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	494 attribute and output in the output attribute.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	495
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	496 The arguments are the same as for the Popen constructor. Example:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	497
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	498 >>> check_output(["ls", "-l", "/dev/null"])
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	499 b'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	500
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	501 The stdout argument is not allowed as it is used internally.
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	502 To capture standard error in the result, use stderr=STDOUT.
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	503
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	504 >>> check_output(["/bin/sh", "-c",
65109 a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	505 ... "ls -l non_existent_file ; exit 0"],
a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	506 ... stderr=STDOUT)
a68f8763555b Merged revisions 76923,76926,77009,77082-77083,77085,77087,77121 via svnmerge from Georg Brandl <georg@python.org> parents: 63930 diff changeset	507 b'ls: non_existent_file: No such file or directory\n'
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	508 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	509 if 'stdout' in kwargs:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	510 raise ValueError('stdout argument not allowed, it will be overridden.')
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	511 process = Popen(popenargs, stdout=PIPE, *kwargs)
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	512 output, unused_err = process.communicate()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	513 retcode = process.poll()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	514 if retcode:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	515 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	516 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	517 cmd = popenargs[0]
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	518 raise CalledProcessError(retcode, cmd, output=output)
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	519 return output
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	520
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	521
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	522 def list2cmdline(seq):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	523 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	524 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	525 string, using the same rules as the MS C runtime:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	526
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	527 1) Arguments are delimited by white space, which is either a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	528 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	529
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	530 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	531 interpreted as a single argument, regardless of white space
62404 5de52eb252da Merged revisions 82076 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61585 diff changeset	532 contained within. A quoted string can be embedded in an
5de52eb252da Merged revisions 82076 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61585 diff changeset	533 argument.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	534
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	535 3) A double quotation mark preceded by a backslash is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	536 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	537
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	538 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	539 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	540
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	541 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	542 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	543 backslash. If the number of backslashes is odd, the last
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	544 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	545 described in rule 3.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	546 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	547
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	548 # See
57156 667d9779cad6 Merged revisions 76170 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55626 diff changeset	549 # http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
667d9779cad6 Merged revisions 76170 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55626 diff changeset	550 # or search http://msdn.microsoft.com for
667d9779cad6 Merged revisions 76170 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55626 diff changeset	551 # "Parsing C++ Command-Line Arguments"
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	552 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	553 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	554 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	555 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	556
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	557 # Add a space to separate this argument from the others
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	558 if result:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	559 result.append(' ')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	560
62404 5de52eb252da Merged revisions 82076 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61585 diff changeset	561 needquote = (" " in arg) or ("\t" in arg) or not arg
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	562 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	563 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	564
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	565 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	566 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	567 # Don't know if we need to double yet.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	568 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	569 elif c == '"':
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	570 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	571 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	572 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	573 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	574 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	575 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	576 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	577 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	578 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	579 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	580
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	581 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	582 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	583 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	584
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	585 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	586 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	587 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	588
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	589 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	590
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	591
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	592 # Various tools for executing commands and looking at their output and status.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	593 #
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	594 # NB This only works (and is only relevant) for POSIX.
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	595
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	596 def getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	597 """Return (status, output) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	598
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	599 Execute the string 'cmd' in a shell with os.popen() and return a 2-tuple
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	600 (status, output). cmd is actually run as '{ cmd ; } 2>&1', so that the
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	601 returned output will contain output or error messages. A trailing newline
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	602 is stripped from the output. The exit status for the command can be
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	603 interpreted according to the rules for the C function wait(). Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	604
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	605 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	606 >>> subprocess.getstatusoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	607 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	608 >>> subprocess.getstatusoutput('cat /bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	609 (256, 'cat: /bin/junk: No such file or directory')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	610 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	611 (256, 'sh: /bin/junk: not found')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	612 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	613 pipe = os.popen('{ ' + cmd + '; } 2>&1', 'r')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	614 text = pipe.read()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	615 sts = pipe.close()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	616 if sts is None: sts = 0
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	617 if text[-1:] == '\n': text = text[:-1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	618 return sts, text
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	619
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	620
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	621 def getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	622 """Return output (stdout or stderr) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	623
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	624 Like getstatusoutput(), except the exit status is ignored and the return
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	625 value is a string containing the command's output. Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	626
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	627 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	628 >>> subprocess.getoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	629 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	630 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	631 return getstatusoutput(cmd)[1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	632
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	633
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	634 _PLATFORM_DEFAULT_CLOSE_FDS = object()
66867 eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	635
eab8f91f5754 Get rid of the close_fds DeprecationWarning. Changes the default on a per Gregory P. Smith <greg@mad-scientist.com> parents: 66723 diff changeset	636
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	637 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	638 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	639 stdin=None, stdout=None, stderr=None,
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	640 preexec_fn=None, close_fds=_PLATFORM_DEFAULT_CLOSE_FDS,
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	641 shell=False, cwd=None, env=None, universal_newlines=False,
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	642 startupinfo=None, creationflags=0,
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	643 restore_signals=True, start_new_session=False,
296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	644 pass_fds=()):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	645 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	646 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	647
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	648 self._child_created = False
41984 e420039368b7 The bufsize argument to Popen() should accept None meaning the default (0). Guido van Rossum <guido@python.org> parents: 41969 diff changeset	649 if bufsize is None:
e420039368b7 The bufsize argument to Popen() should accept None meaning the default (0). Guido van Rossum <guido@python.org> parents: 41969 diff changeset	650 bufsize = 0 # Restore default
41592 1e5a2a2b18ee Fix various spots where int/long and str/unicode unification Walter Dörwald <walter@livinglogic.de> parents: 41554 diff changeset	651 if not isinstance(bufsize, int):
34052 79d2ae0a62ef Raise TypeError if bufsize argument is not an integer. Patch 1071755, slightly modified. Peter Astrand <astrand@lysator.liu.se> parents: 34050 diff changeset	652 raise TypeError("bufsize must be an integer")
79d2ae0a62ef Raise TypeError if bufsize argument is not an integer. Patch 1071755, slightly modified. Peter Astrand <astrand@lysator.liu.se> parents: 34050 diff changeset	653
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	654 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	655 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	656 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	657 "platforms")
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	658 any_stdio_set = (stdin is not None or stdout is not None or
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	659 stderr is not None)
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	660 if close_fds is _PLATFORM_DEFAULT_CLOSE_FDS:
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	661 if any_stdio_set:
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	662 close_fds = False
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	663 else:
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	664 close_fds = True
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	665 elif close_fds and any_stdio_set:
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	666 raise ValueError(
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	667 "close_fds is not supported on Windows platforms"
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	668 " if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	669 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	670 # POSIX
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	671 if close_fds is _PLATFORM_DEFAULT_CLOSE_FDS:
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	672 close_fds = True
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	673 if pass_fds and not close_fds:
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	674 warnings.warn("pass_fds overriding close_fds.", RuntimeWarning)
59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	675 close_fds = True
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	676 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	677 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	678 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	679 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	680 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	681 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	682
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	683 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	684 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	685 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	686 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	687 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	688 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	689
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	690 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	691 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	692 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	693 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	694 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	695 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	696 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	697 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	698 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	699 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	700 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	701 # are file descriptors on both platforms. The parent objects
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	702 # are -1 when not using PIPEs. The child objects are -1
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	703 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	704
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	705 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	706 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	707 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	708
67358 8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	709 # We wrap OS handles before launching the child, otherwise a
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	710 # quickly terminating child could make our fds unwrappable
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	711 # (see #8458).
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	712
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	713 if mswindows:
59619 c45f21705ecb Fix an oversight in r78946 which causes failure in the subprocess module on Windows. Florent Xicluna <florent.xicluna@gmail.com> parents: 59613 diff changeset	714 if p2cwrite != -1:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	715 p2cwrite = msvcrt.open_osfhandle(p2cwrite.Detach(), 0)
59619 c45f21705ecb Fix an oversight in r78946 which causes failure in the subprocess module on Windows. Florent Xicluna <florent.xicluna@gmail.com> parents: 59613 diff changeset	716 if c2pread != -1:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	717 c2pread = msvcrt.open_osfhandle(c2pread.Detach(), 0)
59619 c45f21705ecb Fix an oversight in r78946 which causes failure in the subprocess module on Windows. Florent Xicluna <florent.xicluna@gmail.com> parents: 59613 diff changeset	718 if errread != -1:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	719 errread = msvcrt.open_osfhandle(errread.Detach(), 0)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	720
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	721 if p2cwrite != -1:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	722 self.stdin = io.open(p2cwrite, 'wb', bufsize)
9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	723 if self.universal_newlines:
9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	724 self.stdin = io.TextIOWrapper(self.stdin)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	725 if c2pread != -1:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	726 self.stdout = io.open(c2pread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	727 if universal_newlines:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	728 self.stdout = io.TextIOWrapper(self.stdout)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	729 if errread != -1:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	730 self.stderr = io.open(errread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	731 if universal_newlines:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	732 self.stderr = io.TextIOWrapper(self.stderr)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	733
67358 8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	734 try:
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	735 self._execute_child(args, executable, preexec_fn, close_fds,
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	736 pass_fds, cwd, env, universal_newlines,
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	737 startupinfo, creationflags, shell,
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	738 p2cread, p2cwrite,
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	739 c2pread, c2pwrite,
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	740 errread, errwrite,
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	741 restore_signals, start_new_session)
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	742 except:
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	743 # Cleanup if the child failed starting
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	744 for f in filter(None, [self.stdin, self.stdout, self.stderr]):
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	745 try:
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	746 f.close()
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	747 except EnvironmentError:
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	748 # Ignore EBADF or other errors
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	749 pass
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	750 raise
8af6e8fc0205 In subprocess, wrap pipe fds before launching the child. Hopefully this Antoine Pitrou <solipsis@pitrou.net> parents: 67331 diff changeset	751
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	752
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	753 def _translate_newlines(self, data, encoding):
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	754 data = data.replace(b"\r\n", b"\n").replace(b"\r", b"\n")
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	755 return data.decode(encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	756
66622 e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	757 def __enter__(self):
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	758 return self
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	759
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	760 def __exit__(self, type, value, traceback):
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	761 if self.stdout:
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	762 self.stdout.close()
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	763 if self.stderr:
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	764 self.stderr.close()
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	765 if self.stdin:
e02021fbfe22 Fix #10554. Added context manager support to Popen objects. Brian Curtin <brian.curtin@gmail.com> parents: 66309 diff changeset	766 self.stdin.close()
70049 b00a64a5cb93 merge - 7a3f3ad83676 Fixes Issue #12044. Gregory P. Smith <greg@krypto.org> parents: 69690 diff changeset	767 # Wait for the process to terminate, to avoid zombies.
b00a64a5cb93 merge - 7a3f3ad83676 Fixes Issue #12044. Gregory P. Smith <greg@krypto.org> parents: 69690 diff changeset	768 self.wait()
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	769
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	770 def __del__(self, _maxsize=sys.maxsize, _active=_active):
70554 0f2714e49583 Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 70050 diff changeset	771 # If __init__ hasn't had a chance to execute (e.g. if it
0f2714e49583 Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 70050 diff changeset	772 # was passed an undeclared keyword argument), we don't
0f2714e49583 Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 70050 diff changeset	773 # have a _child_created attribute at all.
0f2714e49583 Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 70050 diff changeset	774 if not getattr(self, '_child_created', False):
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	775 # We didn't get to successfully create a child process.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	776 return
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	777 # In case the child hasn't been waited on, check if it's done.
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	778 self._internal_poll(_deadstate=_maxsize)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	779 if self.returncode is None and _active is not None:
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	780 # Child is still running, keep us alive until we can wait on it.
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	781 _active.append(self)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	782
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	783
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	784 def communicate(self, input=None):
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	785 """Interact with process: Send data to stdin. Read data from
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	786 stdout and stderr, until end-of-file is reached. Wait for
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	787 process to terminate. The optional input argument should be a
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	788 string to be sent to the child process, or None, if no data
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	789 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	790
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	791 communicate() returns a tuple (stdout, stderr)."""
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	792
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	793 # Optimization: If we are only using one pipe, or no pipe at
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	794 # all, using select() or threads is unnecessary.
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	795 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	796 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	797 stderr = None
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	798 if self.stdin:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	799 if input:
69154 158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	800 try:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	801 self.stdin.write(input)
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	802 except IOError as e:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	803 if e.errno != errno.EPIPE and e.errno != errno.EINVAL:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	804 raise
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	805 self.stdin.close()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	806 elif self.stdout:
71228 dcfacc2d93b4 Issue #12493: subprocess: communicate() handles EINTR Victor Stinner <victor.stinner@haypocalc.com> parents: 70921 diff changeset	807 stdout = _eintr_retry_call(self.stdout.read)
47557 98827a21e352 Merged revisions 63724,63726,63732,63744,63754-63755,63757-63758,63760,63775,63781-63782,63787,63805-63808,63818-63819,63823-63824 via svnmerge from Georg Brandl <georg@python.org> parents: 47331 diff changeset	808 self.stdout.close()
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	809 elif self.stderr:
71228 dcfacc2d93b4 Issue #12493: subprocess: communicate() handles EINTR Victor Stinner <victor.stinner@haypocalc.com> parents: 70921 diff changeset	810 stderr = _eintr_retry_call(self.stderr.read)
47557 98827a21e352 Merged revisions 63724,63726,63732,63744,63754-63755,63757-63758,63760,63775,63781-63782,63787,63805-63808,63818-63819,63823-63824 via svnmerge from Georg Brandl <georg@python.org> parents: 47331 diff changeset	811 self.stderr.close()
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	812 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	813 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	814
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	815 return self._communicate(input)
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	816
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	817
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	818 def poll(self):
7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	819 return self._internal_poll()
7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	820
7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	821
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	822 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	823 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	824 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	825 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	826 def _get_handles(self, stdin, stdout, stderr):
55617 a267c604465f Recorded merge of revisions 74057 via svnmerge from Georg Brandl <georg@python.org> parents: 55602 diff changeset	827 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	828 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	829 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	830 if stdin is None and stdout is None and stderr is None:
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	831 return (-1, -1, -1, -1, -1, -1)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	832
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	833 p2cread, p2cwrite = -1, -1
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	834 c2pread, c2pwrite = -1, -1
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	835 errread, errwrite = -1, -1
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	836
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	837 if stdin is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	838 p2cread = _subprocess.GetStdHandle(_subprocess.STD_INPUT_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	839 if p2cread is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	840 p2cread, _ = _subprocess.CreatePipe(None, 0)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	841 elif stdin == PIPE:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	842 p2cread, p2cwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	843 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	844 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	845 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	846 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	847 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	848 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	849
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	850 if stdout is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	851 c2pwrite = _subprocess.GetStdHandle(_subprocess.STD_OUTPUT_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	852 if c2pwrite is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	853 _, c2pwrite = _subprocess.CreatePipe(None, 0)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	854 elif stdout == PIPE:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	855 c2pread, c2pwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	856 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	857 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	858 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	859 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	860 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	861 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	862
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	863 if stderr is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	864 errwrite = _subprocess.GetStdHandle(_subprocess.STD_ERROR_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	865 if errwrite is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	866 _, errwrite = _subprocess.CreatePipe(None, 0)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	867 elif stderr == PIPE:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	868 errread, errwrite = _subprocess.CreatePipe(None, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	869 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	870 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	871 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	872 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	873 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	874 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	875 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	876 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	877
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	878 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	879 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	880 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	881
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	882
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	883 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	884 """Return a duplicate of handle, which is inheritable"""
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	885 return _subprocess.DuplicateHandle(_subprocess.GetCurrentProcess(),
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	886 handle, _subprocess.GetCurrentProcess(), 0, 1,
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	887 _subprocess.DUPLICATE_SAME_ACCESS)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	888
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	889
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	890 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	891 """Find and return absolut path to w9xpopen.exe"""
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	892 w9xpopen = os.path.join(
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	893 os.path.dirname(_subprocess.GetModuleFileName(0)),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	894 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	895 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	896 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	897 # situation - see if we can locate it in sys.exec_prefix
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	898 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	899 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	900 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	901 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	902 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	903 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	904 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	905
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	906
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	907 def _execute_child(self, args, executable, preexec_fn, close_fds,
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	908 pass_fds, cwd, env, universal_newlines,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	909 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	910 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	911 c2pread, c2pwrite,
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	912 errread, errwrite,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	913 unused_restore_signals, unused_start_new_session):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	914 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	915
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	916 assert not pass_fds, "pass_fds not supported on Windows."
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	917
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	918 if not isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	919 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	920
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	921 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	922 if startupinfo is None:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	923 startupinfo = STARTUPINFO()
61793 441491572fce Issue #8780: Fix a regression introduced by r78946 in subprocess on Windows Victor Stinner <victor.stinner@haypocalc.com> parents: 61693 diff changeset	924 if -1 not in (p2cread, c2pwrite, errwrite):
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	925 startupinfo.dwFlags \|= _subprocess.STARTF_USESTDHANDLES
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	926 startupinfo.hStdInput = p2cread
66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	927 startupinfo.hStdOutput = c2pwrite
66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	928 startupinfo.hStdError = errwrite
66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	929
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	930 if shell:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	931 startupinfo.dwFlags \|= _subprocess.STARTF_USESHOWWINDOW
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	932 startupinfo.wShowWindow = _subprocess.SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	933 comspec = os.environ.get("COMSPEC", "cmd.exe")
63930 8499ae5d9719 #2304: fix incorporating Eric Smith's .format suggestion and tested on Ubuntu as well as Windows Tim Golden <mail@timgolden.me.uk> parents: 63843 diff changeset	934 args = '{} /c "{}"'.format (comspec, args)
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	935 if (_subprocess.GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	936 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	937 # Win9x, or using command.com on NT. We need to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	938 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	939 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	940 # (http://web.archive.org/web/20011105084002/http://support.microsoft.com/support/kb/articles/Q150/9/56.asp)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	941 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	942 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	943 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	944 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	945 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	946 # use at xxx" and a hopeful warning about the
51776 d06a3ebf306f Merged revisions 69846 via svnmerge from Mark Dickinson <dickinsm@gmail.com> parents: 51721 diff changeset	947 # stability of your system. Cost is Ctrl+C won't
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	948 # kill children.
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	949 creationflags \|= _subprocess.CREATE_NEW_CONSOLE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	950
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	951 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	952 try:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	953 hp, ht, pid, tid = _subprocess.CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	954 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	955 None, None,
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	956 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	957 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	958 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	959 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	960 startupinfo)
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	961 except pywintypes.error as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	962 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	963 # a subclass of OSError. FIXME: We should really
68585 bf94b6a73fc8 #11565: Fix several typos. Patch by Piotr Kasprzyk. Ezio Melotti <ezio.melotti@gmail.com> parents: 67311 diff changeset	964 # translate errno using _sys_errlist (or similar), but
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	965 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	966 raise WindowsError(*e.args)
63816 f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	967 finally:
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	968 # Child is launched. Close the parent's copy of those pipe
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	969 # handles that only the child should have open. You need
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	970 # to make sure that no handles to the write end of the
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	971 # output pipe are maintained in this process or else the
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	972 # pipe will not close when the child process exits and the
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	973 # ReadFile will hang.
63815 e41ca6672f82 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63094 diff changeset	974 if p2cread != -1:
63816 f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	975 p2cread.Close()
63815 e41ca6672f82 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63094 diff changeset	976 if c2pwrite != -1:
63816 f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	977 c2pwrite.Close()
63815 e41ca6672f82 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63094 diff changeset	978 if errwrite != -1:
63816 f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	979 errwrite.Close()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	980
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	981 # Retain the process handle, but close the thread handle
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	982 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	983 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	984 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	985 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	986
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	987 def _internal_poll(self, _deadstate=None,
61585 0e37a95cdcfb Merged revisions 81181 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61569 diff changeset	988 _WaitForSingleObject=_subprocess.WaitForSingleObject,
0e37a95cdcfb Merged revisions 81181 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61569 diff changeset	989 _WAIT_OBJECT_0=_subprocess.WAIT_OBJECT_0,
0e37a95cdcfb Merged revisions 81181 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61569 diff changeset	990 _GetExitCodeProcess=_subprocess.GetExitCodeProcess):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	991 """Check if child process has terminated. Returns returncode
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	992 attribute.
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	993
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	994 This method is called by __del__, so it can only refer to objects
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	995 in its local scope.
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	996
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	997 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	998 if self.returncode is None:
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	999 if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1000 self.returncode = _GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1001 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1002
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1004 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1005 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1006 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1007 if self.returncode is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	1008 _subprocess.WaitForSingleObject(self._handle,
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	1009 _subprocess.INFINITE)
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	1010 self.returncode = _subprocess.GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1011 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1012
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1013
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1014 def _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1015 buffer.append(fh.read())
67130 38d66980187e Issue #10763: subprocess.communicate() closes stdout and stderr if both are Victor Stinner <victor.stinner@haypocalc.com> parents: 66893 diff changeset	1016 fh.close()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1017
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1018
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1019 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1020 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1021 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1022
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1024 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	1025 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	1026 args=(self.stdout, stdout))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	1027 stdout_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1028 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1029 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1030 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	1031 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	1032 args=(self.stderr, stderr))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	1033 stderr_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1034 stderr_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1035
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1036 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1037 if input is not None:
69154 158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1038 try:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1039 self.stdin.write(input)
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1040 except IOError as e:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1041 if e.errno != errno.EPIPE:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1042 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1043 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1044
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1045 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1046 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1047 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1048 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1049
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1050 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1051 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1052 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1053 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1054 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1055
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1056 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1057 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1058
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1059 def send_signal(self, sig):
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1060 """Send a signal to the process
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1061 """
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1062 if sig == signal.SIGTERM:
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1063 self.terminate()
60556 a2f5b3b19eb2 Port #1220212 (os.kill for Win32) to py3k. Brian Curtin <brian.curtin@gmail.com> parents: 59619 diff changeset	1064 elif sig == signal.CTRL_C_EVENT:
a2f5b3b19eb2 Port #1220212 (os.kill for Win32) to py3k. Brian Curtin <brian.curtin@gmail.com> parents: 59619 diff changeset	1065 os.kill(self.pid, signal.CTRL_C_EVENT)
a2f5b3b19eb2 Port #1220212 (os.kill for Win32) to py3k. Brian Curtin <brian.curtin@gmail.com> parents: 59619 diff changeset	1066 elif sig == signal.CTRL_BREAK_EVENT:
a2f5b3b19eb2 Port #1220212 (os.kill for Win32) to py3k. Brian Curtin <brian.curtin@gmail.com> parents: 59619 diff changeset	1067 os.kill(self.pid, signal.CTRL_BREAK_EVENT)
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1068 else:
64518 1a1e7254d965 Adjust #8956 to add the bad signal number to the exception message. Brian Curtin <brian.curtin@gmail.com> parents: 64493 diff changeset	1069 raise ValueError("Unsupported signal: {}".format(sig))
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1070
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1071 def terminate(self):
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1072 """Terminates the process
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1073 """
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	1074 _subprocess.TerminateProcess(self._handle, 1)
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1075
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1076 kill = terminate
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1077
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1078 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1079 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1080 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1081 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1082 def _get_handles(self, stdin, stdout, stderr):
55617 a267c604465f Recorded merge of revisions 74057 via svnmerge from Georg Brandl <georg@python.org> parents: 55602 diff changeset	1083 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1084 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1085 """
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1086 p2cread, p2cwrite = -1, -1
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1087 c2pread, c2pwrite = -1, -1
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1088 errread, errwrite = -1, -1
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1089
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1090 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1091 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1092 elif stdin == PIPE:
66868 de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	1093 p2cread, p2cwrite = _create_pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1094 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1095 p2cread = stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1096 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1097 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1098 p2cread = stdin.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1099
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1100 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1101 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1102 elif stdout == PIPE:
66868 de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	1103 c2pread, c2pwrite = _create_pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1104 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1105 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1106 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1107 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1108 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1109
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1110 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1111 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1112 elif stderr == PIPE:
66868 de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	1113 errread, errwrite = _create_pipe()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1114 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1115 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1116 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1117 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1118 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1119 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1120 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1121
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1122 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1123 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1124 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1125
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1126
67331 9ad896426f79 Un-complicate some code Antoine Pitrou <solipsis@pitrou.net> parents: 67310 diff changeset	1127 def _close_fds(self, fds_to_keep):
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1128 start_fd = 3
67331 9ad896426f79 Un-complicate some code Antoine Pitrou <solipsis@pitrou.net> parents: 67310 diff changeset	1129 for fd in sorted(fds_to_keep):
66889 59b43dc34158 Issue #6559: fix the subprocess.Popen pass_fds implementation. Add a unittest. Gregory P. Smith <greg@mad-scientist.com> parents: 66868 diff changeset	1130 if fd >= start_fd:
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1131 os.closerange(start_fd, fd)
296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1132 start_fd = fd + 1
296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1133 if start_fd <= MAXFD:
296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1134 os.closerange(start_fd, MAXFD)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1135
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1136
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1137 def _execute_child(self, args, executable, preexec_fn, close_fds,
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1138 pass_fds, cwd, env, universal_newlines,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1139 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1140 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1141 c2pread, c2pwrite,
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1142 errread, errwrite,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1143 restore_signals, start_new_session):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1144 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1145
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	1146 if isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1147 args = [args]
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1148 else:
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1149 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1150
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1151 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1152 args = ["/bin/sh", "-c"] + args
63095 ad66eff9800b Merged revisions 82971 via svnmerge from Stefan Krah <stefan@bytereef.org> parents: 62404 diff changeset	1153 if executable:
ad66eff9800b Merged revisions 82971 via svnmerge from Stefan Krah <stefan@bytereef.org> parents: 62404 diff changeset	1154 args[0] = executable
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1155
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1156 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1157 executable = args[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1158
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1159 # For transferring possible exec failure from child to parent.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1160 # Data format: "exception name:hex errno:description"
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1161 # Pickle is not used; it is complex and involves memory allocation.
66868 de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from Gregory P. Smith <greg@mad-scientist.com> parents: 66867 diff changeset	1162 errpipe_read, errpipe_write = _create_pipe()
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1163 try:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1164 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1165
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1166 if _posixsubprocess:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1167 # We must avoid complex work that could involve
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1168 # malloc or free in the child process to avoid
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1169 # potential deadlocks, thus we do all this here.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1170 # and pass it to fork_exec()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1171
70921 b5963fceddad Close #12383: Fix subprocess module with env={}: don't copy the environment Victor Stinner <victor.stinner@haypocalc.com> parents: 70554 diff changeset	1172 if env is not None:
61406 227fa7db50de Issue #8514: Add os.fsencode() function (Unix only): encode a string to bytes Victor Stinner <victor.stinner@haypocalc.com> parents: 60922 diff changeset	1173 env_list = [os.fsencode(k) + b'=' + os.fsencode(v)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1174 for k, v in env.items()]
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1175 else:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1176 env_list = None # Use execv instead of execve.
61693 cf74ec3e1f82 Issue #8513: os.get_exec_path() supports b'PATH' key and bytes value. Victor Stinner <victor.stinner@haypocalc.com> parents: 61584 diff changeset	1177 executable = os.fsencode(executable)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1178 if os.path.dirname(executable):
61693 cf74ec3e1f82 Issue #8513: os.get_exec_path() supports b'PATH' key and bytes value. Victor Stinner <victor.stinner@haypocalc.com> parents: 61584 diff changeset	1179 executable_list = (executable,)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1180 else:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1181 # This matches the behavior of os._execvpe().
61693 cf74ec3e1f82 Issue #8513: os.get_exec_path() supports b'PATH' key and bytes value. Victor Stinner <victor.stinner@haypocalc.com> parents: 61584 diff changeset	1182 executable_list = tuple(
cf74ec3e1f82 Issue #8513: os.get_exec_path() supports b'PATH' key and bytes value. Victor Stinner <victor.stinner@haypocalc.com> parents: 61584 diff changeset	1183 os.path.join(os.fsencode(dir), executable)
cf74ec3e1f82 Issue #8513: os.get_exec_path() supports b'PATH' key and bytes value. Victor Stinner <victor.stinner@haypocalc.com> parents: 61584 diff changeset	1184 for dir in os.get_exec_path(env))
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1185 fds_to_keep = set(pass_fds)
296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1186 fds_to_keep.add(errpipe_write)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1187 self.pid = _posixsubprocess.fork_exec(
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1188 args, executable_list,
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1189 close_fds, sorted(fds_to_keep), cwd, env_list,
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1190 p2cread, p2cwrite, c2pread, c2pwrite,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1191 errread, errwrite,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1192 errpipe_read, errpipe_write,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1193 restore_signals, start_new_session, preexec_fn)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1194 else:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1195 # Pure Python implementation: It is not thread safe.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1196 # This implementation may deadlock in the child if your
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1197 # parent process has any other threads running.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1198
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1199 gc_was_enabled = gc.isenabled()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1200 # Disable gc to avoid bug where gc -> file_dealloc ->
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1201 # write to stderr -> hang. See issue1336
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1202 gc.disable()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1203 try:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1204 self.pid = os.fork()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1205 except:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1206 if gc_was_enabled:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1207 gc.enable()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1208 raise
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1209 self._child_created = True
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1210 if self.pid == 0:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1211 # Child
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1212 try:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1213 # Close parent's pipe ends
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1214 if p2cwrite != -1:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1215 os.close(p2cwrite)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1216 if c2pread != -1:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1217 os.close(c2pread)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1218 if errread != -1:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1219 os.close(errread)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1220 os.close(errpipe_read)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1221
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1222 # Dup fds for child
67310 a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1223 def _dup2(a, b):
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1224 # dup2() removes the CLOEXEC flag but
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1225 # we must do it ourselves if dup2()
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1226 # would be a no-op (issue #10806).
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1227 if a == b:
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1228 _set_cloexec(a, False)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1229 elif a != -1:
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1230 os.dup2(a, b)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1231 _dup2(p2cread, 0)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1232 _dup2(c2pwrite, 1)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1233 _dup2(errwrite, 2)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1234
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1235 # Close pipe fds. Make sure we don't close the
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1236 # same fd more than once, or standard fds.
67310 a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1237 closed = set()
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1238 for fd in [p2cread, c2pwrite, errwrite]:
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1239 if fd > 2 and fd not in closed:
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1240 os.close(fd)
a66a6e42538f Issue #10806, issue #9905: Fix subprocess pipes when some of the standard Antoine Pitrou <solipsis@pitrou.net> parents: 67130 diff changeset	1241 closed.add(fd)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1242
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1243 # Close all other fds, if asked for
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1244 if close_fds:
67331 9ad896426f79 Un-complicate some code Antoine Pitrou <solipsis@pitrou.net> parents: 67310 diff changeset	1245 fds_to_keep = set(pass_fds)
9ad896426f79 Un-complicate some code Antoine Pitrou <solipsis@pitrou.net> parents: 67310 diff changeset	1246 fds_to_keep.add(errpipe_write)
9ad896426f79 Un-complicate some code Antoine Pitrou <solipsis@pitrou.net> parents: 67310 diff changeset	1247 self._close_fds(fds_to_keep)
66692 296e6f85f56d issue6559: Adds a pass_fds parameter to subprocess.Popen that allows the caller Gregory P. Smith <greg@mad-scientist.com> parents: 66676 diff changeset	1248
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1249
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1250 if cwd is not None:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1251 os.chdir(cwd)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1252
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1253 # This is a copy of Python/pythonrun.c
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1254 # _Py_RestoreSignals(). If that were exposed
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1255 # as a sys._py_restoresignals func it would be
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1256 # better.. but this pure python implementation
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1257 # isn't likely to be used much anymore.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1258 if restore_signals:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1259 signals = ('SIGPIPE', 'SIGXFZ', 'SIGXFSZ')
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1260 for sig in signals:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1261 if hasattr(signal, sig):
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1262 signal.signal(getattr(signal, sig),
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1263 signal.SIG_DFL)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1264
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1265 if start_new_session and hasattr(os, 'setsid'):
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1266 os.setsid()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1267
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1268 if preexec_fn:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1269 preexec_fn()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1270
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1271 if env is None:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1272 os.execvp(executable, args)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1273 else:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1274 os.execvpe(executable, args, env)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1275
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1276 except:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1277 try:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1278 exc_type, exc_value = sys.exc_info()[:2]
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1279 if isinstance(exc_value, OSError):
66309 43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1280 errno_num = exc_value.errno
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1281 else:
66309 43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1282 errno_num = 0
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1283 message = '%s:%x:%s' % (exc_type.__name__,
66309 43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1284 errno_num, exc_value)
60896 8428eaa2d3ad Issue #8467: Pure Python implementation of subprocess encodes the error message Victor Stinner <victor.stinner@haypocalc.com> parents: 60556 diff changeset	1285 message = message.encode(errors="surrogatepass")
8428eaa2d3ad Issue #8467: Pure Python implementation of subprocess encodes the error message Victor Stinner <victor.stinner@haypocalc.com> parents: 60556 diff changeset	1286 os.write(errpipe_write, message)
8428eaa2d3ad Issue #8467: Pure Python implementation of subprocess encodes the error message Victor Stinner <victor.stinner@haypocalc.com> parents: 60556 diff changeset	1287 except Exception:
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1288 # We MUST not allow anything odd happening
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1289 # above to prevent us from exiting below.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1290 pass
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1291
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1292 # This exitcode won't be reported to applications
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1293 # so it really doesn't matter what we return.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1294 os._exit(255)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1295
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1296 # Parent
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1297 if gc_was_enabled:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1298 gc.enable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1299 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1300 # be sure the FD is closed no matter what
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1301 os.close(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1302
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1303 if p2cread != -1 and p2cwrite != -1:
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1304 os.close(p2cread)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1305 if c2pwrite != -1 and c2pread != -1:
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1306 os.close(c2pwrite)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1307 if errwrite != -1 and errread != -1:
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1308 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1309
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1310 # Wait for exec to fail or succeed; possibly raising an
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1311 # exception (limited in size)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1312 data = bytearray()
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1313 while True:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1314 part = _eintr_retry_call(os.read, errpipe_read, 50000)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1315 data += part
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1316 if not part or len(data) > 50000:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1317 break
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1318 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1319 # be sure the FD is closed no matter what
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1320 os.close(errpipe_read)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1321
41731 78d76435da9a Make test_sys pass. Guido van Rossum <guido@python.org> parents: 41699 diff changeset	1322 if data:
66895 b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1323 try:
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1324 _eintr_retry_call(os.waitpid, self.pid, 0)
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1325 except OSError as e:
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1326 if e.errno != errno.ECHILD:
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1327 raise
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1328 try:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1329 exception_name, hex_errno, err_msg = data.split(b':', 2)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1330 except ValueError:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1331 print('Bad exception data:', repr(data))
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1332 exception_name = b'RuntimeError'
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1333 hex_errno = b'0'
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1334 err_msg = b'Unknown'
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1335 child_exception_type = getattr(
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1336 builtins, exception_name.decode('ascii'),
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1337 RuntimeError)
51721 33d5d7daa8c7 Merged revisions 69576,69579-69580,69589,69619-69620,69633,69703-69704,69728-69730 via svnmerge from Benjamin Peterson <benjamin@python.org> parents: 51657 diff changeset	1338 for fd in (p2cwrite, c2pread, errread):
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1339 if fd != -1:
51721 33d5d7daa8c7 Merged revisions 69576,69579-69580,69589,69619-69620,69633,69703-69704,69728-69730 via svnmerge from Benjamin Peterson <benjamin@python.org> parents: 51657 diff changeset	1340 os.close(fd)
60896 8428eaa2d3ad Issue #8467: Pure Python implementation of subprocess encodes the error message Victor Stinner <victor.stinner@haypocalc.com> parents: 60556 diff changeset	1341 err_msg = err_msg.decode(errors="surrogatepass")
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1342 if issubclass(child_exception_type, OSError) and hex_errno:
66309 43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1343 errno_num = int(hex_errno, 16)
43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1344 if errno_num != 0:
43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1345 err_msg = os.strerror(errno_num)
43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1346 if errno_num == errno.ENOENT:
66307 c06ed25e69b8 add filename to ENOENT message #4925 Benjamin Peterson <benjamin@python.org> parents: 64518 diff changeset	1347 err_msg += ': ' + repr(args[0])
66309 43e50bb923a9 don't shadow globals Benjamin Peterson <benjamin@python.org> parents: 66307 diff changeset	1348 raise child_exception_type(errno_num, err_msg)
59605 768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1349 raise child_exception_type(err_msg)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1350
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1351
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1352 def _handle_exitstatus(self, sts, _WIFSIGNALED=os.WIFSIGNALED,
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1353 _WTERMSIG=os.WTERMSIG, _WIFEXITED=os.WIFEXITED,
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1354 _WEXITSTATUS=os.WEXITSTATUS):
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1355 # This method is called (indirectly) by __del__, so it cannot
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1356 # refer to anything outside of its local scope."""
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1357 if _WIFSIGNALED(sts):
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1358 self.returncode = -_WTERMSIG(sts)
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1359 elif _WIFEXITED(sts):
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1360 self.returncode = _WEXITSTATUS(sts)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1361 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1362 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1363 raise RuntimeError("Unknown child exit status!")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1364
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1365
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1366 def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1367 _WNOHANG=os.WNOHANG, _os_error=os.error):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1368 """Check if child process has terminated. Returns returncode
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1369 attribute.
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1370
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1371 This method is called by __del__, so it cannot reference anything
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1372 outside of the local scope (nor can any methods it calls).
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1373
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1374 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1375 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1376 try:
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1377 pid, sts = _waitpid(self.pid, _WNOHANG)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1378 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1379 self._handle_exitstatus(sts)
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1380 except _os_error:
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	1381 if _deadstate is not None:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	1382 self.returncode = _deadstate
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1383 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1384
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1385
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1386 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1387 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1388 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1389 if self.returncode is None:
66895 b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1390 try:
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1391 pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1392 except OSError as e:
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1393 if e.errno != errno.ECHILD:
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1394 raise
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1395 # This happens if SIGCLD is set to be ignored or waiting
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1396 # for child processes has otherwise been disabled for our
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1397 # process. This child is dead, we can't get the status.
b066bd0b64e7 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 65109 diff changeset	1398 sts = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1399 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1400 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1401
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1402
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1403 def _communicate(self, input):
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1404 if self.stdin:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1405 # Flush stdio buffer. This might block, if the user has
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1406 # been writing to .stdin in an uncontrolled fashion.
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1407 self.stdin.flush()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1408 if not input:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1409 self.stdin.close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1410
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1411 if _has_poll:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1412 stdout, stderr = self._communicate_with_poll(input)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1413 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1414 stdout, stderr = self._communicate_with_select(input)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1415
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1416 # All data exchanged. Translate lists into strings.
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1417 if stdout is not None:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1418 stdout = b''.join(stdout)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1419 if stderr is not None:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1420 stderr = b''.join(stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1421
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1422 # Translate newlines, if requested.
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1423 # This also turns bytes into strings.
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1424 if self.universal_newlines:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1425 if stdout is not None:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1426 stdout = self._translate_newlines(stdout,
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1427 self.stdout.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1428 if stderr is not None:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1429 stderr = self._translate_newlines(stderr,
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1430 self.stderr.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1431
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1432 self.wait()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1433 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1434
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1435
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1436 def _communicate_with_poll(self, input):
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1437 stdout = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1438 stderr = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1439 fd2file = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1440 fd2output = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1441
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1442 poller = select.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1443 def register_and_append(file_obj, eventmask):
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1444 poller.register(file_obj.fileno(), eventmask)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1445 fd2file[file_obj.fileno()] = file_obj
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1446
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1447 def close_unregister_and_remove(fd):
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1448 poller.unregister(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1449 fd2file[fd].close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1450 fd2file.pop(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1451
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1452 if self.stdin and input:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1453 register_and_append(self.stdin, select.POLLOUT)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1454
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1455 select_POLLIN_POLLPRI = select.POLLIN \| select.POLLPRI
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1456 if self.stdout:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1457 register_and_append(self.stdout, select_POLLIN_POLLPRI)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1458 fd2output[self.stdout.fileno()] = stdout = []
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1459 if self.stderr:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1460 register_and_append(self.stderr, select_POLLIN_POLLPRI)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1461 fd2output[self.stderr.fileno()] = stderr = []
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1462
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1463 input_offset = 0
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1464 while fd2file:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1465 try:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1466 ready = poller.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1467 except select.error as e:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1468 if e.args[0] == errno.EINTR:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1469 continue
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1470 raise
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1471
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1472 # XXX Rewrite these to use non-blocking I/O on the
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1473 # file objects; they are no longer using C stdio!
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1474
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1475 for fd, mode in ready:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1476 if mode & select.POLLOUT:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1477 chunk = input[input_offset : input_offset + _PIPE_BUF]
69154 158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1478 try:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1479 input_offset += os.write(fd, chunk)
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1480 except OSError as e:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1481 if e.errno == errno.EPIPE:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1482 close_unregister_and_remove(fd)
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1483 else:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1484 raise
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1485 else:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1486 if input_offset >= len(input):
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1487 close_unregister_and_remove(fd)
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1488 elif mode & select_POLLIN_POLLPRI:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1489 data = os.read(fd, 4096)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1490 if not data:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1491 close_unregister_and_remove(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1492 fd2output[fd].append(data)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1493 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1494 # Ignore hang up or errors.
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1495 close_unregister_and_remove(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1496
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1497 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1498
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1499
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1500 def _communicate_with_select(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1501 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1502 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1503 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1504 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1505
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1506 if self.stdin and input:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1507 write_set.append(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1508 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1509 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1510 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1511 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1512 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1513 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1514
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1515 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1516 while read_set or write_set:
48494 aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1517 try:
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1518 rlist, wlist, xlist = select.select(read_set, write_set, [])
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1519 except select.error as e:
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1520 if e.args[0] == errno.EINTR:
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1521 continue
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1522 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1523
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1524 # XXX Rewrite these to use non-blocking I/O on the
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1525 # file objects; they are no longer using C stdio!
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1526
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1527 if self.stdin in wlist:
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1528 chunk = input[input_offset : input_offset + _PIPE_BUF]
69154 158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1529 try:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1530 bytes_written = os.write(self.stdin.fileno(), chunk)
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1531 except OSError as e:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1532 if e.errno == errno.EPIPE:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1533 self.stdin.close()
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1534 write_set.remove(self.stdin)
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1535 else:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1536 raise
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1537 else:
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1538 input_offset += bytes_written
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1539 if input_offset >= len(input):
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1540 self.stdin.close()
158495d49f58 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68679 diff changeset	1541 write_set.remove(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1542
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1543 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1544 data = os.read(self.stdout.fileno(), 1024)
41732 bbb099d4ec80 Make test_subprocess pass. The subprocess module now reads and writes Guido van Rossum <guido@python.org> parents: 41731 diff changeset	1545 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1546 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1547 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1548 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1549
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1550 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1551 data = os.read(self.stderr.fileno(), 1024)
41732 bbb099d4ec80 Make test_subprocess pass. The subprocess module now reads and writes Guido van Rossum <guido@python.org> parents: 41731 diff changeset	1552 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1553 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1554 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1555 stderr.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1556
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1557 return (stdout, stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1558
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1559
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1560 def send_signal(self, sig):
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1561 """Send a signal to the process
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1562 """
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1563 os.kill(self.pid, sig)
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1564
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1565 def terminate(self):
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1566 """Terminate the process with SIGTERM
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1567 """
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1568 self.send_signal(signal.SIGTERM)
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1569
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1570 def kill(self):
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1571 """Kill the process with SIGKILL
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1572 """
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1573 self.send_signal(signal.SIGKILL)
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	1574
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1575
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1576 def _demo_posix():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1577 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1578 # Example 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1579 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1580 plist = Popen(["ps"], stdout=PIPE).communicate()[0]
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1581 print("Process list:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1582 print(plist)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1583
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1584 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1585 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1586 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1587 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1588 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1589 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1590
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1591 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1592 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1593 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1594 print("Looking for 'hda'...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1595 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1596 p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1597 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1598
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1599 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1600 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1601 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1602 print()
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1603 print("Trying a weird file...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1604 try:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1605 print(Popen(["/this/path/does/not/exist"]).communicate())
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	1606 except OSError as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1607 if e.errno == errno.ENOENT:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1608 print("The file didn't exist. I thought so...")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1609 print("Child traceback:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1610 print(e.child_traceback)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1611 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1612 print("Error", e.errno)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1613 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1614 print("Gosh. No error.", file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1615
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1616
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1617 def _demo_windows():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1618 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1619 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1620 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1621 print("Looking for 'PROMPT' in set output...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1622 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1623 p2 = Popen('find "PROMPT"', stdin=p1.stdout, stdout=PIPE)
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1624 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1625
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1626 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1627 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1628 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1629 print("Executing calc...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1630 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1631 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1632
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1633
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1634 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1635 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1636 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1637 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1638 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 71285:8bc9dbc61ba6 3.2