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

annotate Lib/subprocess.py @ 62799:dcc2e8bf64cf

Fix: Issue9091 Minor documentation clarification.

author	Senthil Kumaran <orsenthil@gmail.com>
date	Mon, 05 Jul 2010 11:41:42 +0000
parents	ef8a2ab26e9f
children	aa0b56dd14af

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,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	30 preexec_fn=None, close_fds=False, shell=False,
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,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	33 restore_signals=True, start_new_session=False):
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	42 On UNIX, with shell=False (default): In this case, the Popen class
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	47 On UNIX, with shell=True: If args is a string, it specifies the
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
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	76 On UNIX, if preexec_fn is set to a callable object, this object will 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	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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	83 closed before the child process is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	84
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	85 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	86 shell.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	87
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	88 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	89 before the child is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	90
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	91 On UNIX, if restore_signals is True all signals that Python sets to
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	92 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	93 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	94 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	95
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	96 On UNIX, if start_new_session is True, the setsid() system call will be made
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 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	98
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	99 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	100 process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	101
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	102 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	103 opened as a text files, but lines may be terminated by any of '\n',
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	104 the Unix end-of-line convention, '\r', the Macintosh convention or
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	105 '\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	106 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	107 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	108 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	109 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	110
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	111 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	112 underlying CreateProcess() function. They can specify things such as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	113 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	114 (Windows only)
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
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	117 This module also defines some shortcut functions:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	118
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	119 call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	120 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	121 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	122
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	123 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	124
59471 ac80884ddcc3 Merged revisions 78736,78759,78761,78767,78788-78789 via svnmerge from Florent Xicluna <florent.xicluna@gmail.com> parents: 59207 diff changeset	125 >>> retcode = subprocess.call(["ls", "-l"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	126
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	127 check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	128 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	129 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	130 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	131 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	132
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	133 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	134
59471 ac80884ddcc3 Merged revisions 78736,78759,78761,78767,78788-78789 via svnmerge from Florent Xicluna <florent.xicluna@gmail.com> parents: 59207 diff changeset	135 >>> subprocess.check_call(["ls", "-l"])
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	136 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	137
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	138 getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	139 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	140
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	141 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	142 (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	143 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	144 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	145 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	146
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	147 >>> 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	148 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	149 >>> 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	150 (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	151 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	152 (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	153
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	154 getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	155 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	156
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	157 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	158 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	159
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	160 >>> 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	161 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	162
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	163 check_output(popenargs, *kwargs):
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	164 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	165
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	166 If the exit code was non-zero it raises a CalledProcessError. The
c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	167 CalledProcessError object will have the return code in the returncode
c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	168 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	169
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	170 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	171
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	172 >>> 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	173
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	174
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	175 Exceptions
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	176 ----------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	177 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	178 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	179 the exception object will have one extra attribute called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	180 'child_traceback', which is a string containing traceback information
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	181 from the childs point of view.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	182
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	183 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	184 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	185 should prepare for OSErrors.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	186
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	187 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	188
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	189 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	190 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	191
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	192
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	193 Security
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	194 --------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	195 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	196 /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	197 metacharacters, can safely be passed to child processes.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	198
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 Popen objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	201 =============
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	202 Instances of the Popen class have the following methods:
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 poll()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	205 Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	206 attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	207
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	208 wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	209 Wait for child process to terminate. Returns returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	210
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	211 communicate(input=None)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	212 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	213 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	214 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	215 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	216 the child.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	217
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	218 communicate() returns a tuple (stdout, stderr).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	219
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	220 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	221 method if the data size is large or unlimited.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	222
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	223 The following attributes are also available:
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 stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	226 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	227 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	228
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	229 stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	230 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	231 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	232 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 stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	235 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	236 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	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 pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	240 The process ID of the child process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	241
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	242 returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	243 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	244 hasn't terminated yet. A negative value -N indicates that the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	245 child was terminated by signal N (UNIX only).
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	248 Replacing older functions with the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	249 ====================================================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	250 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	251 for a.
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 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	254 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	255 exception.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	257 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	258 imported with "from subprocess import *".
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	259
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	260
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	261 Replacing /bin/sh shell backquote
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	262 ---------------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	263 output=`mycmd myarg`
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 output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	266
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 Replacing shell pipe line
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=`dmesg \| grep hda`
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 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	273 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	274 output = p2.communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	275
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 Replacing os.system()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	278 ---------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	279 sts = os.system("mycmd" + " myarg")
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 p = Popen("mycmd" + " myarg", shell=True)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	282 pid, sts = os.waitpid(p.pid, 0)
33723 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 Note:
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 * 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	287
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	288 * 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	289 exitstatus.
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 A more real-world example would look like this:
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 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	294 retcode = call("mycmd" + " myarg", shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	295 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	296 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	297 else:
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	298 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	299 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	300 print("Execution failed:", e, file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	301
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	302
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	303 Replacing os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	304 -------------------
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	305 P_NOWAIT example:
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 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	308 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	309 pid = Popen(["/bin/mycmd", "myarg"]).pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	310
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 P_WAIT example:
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 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	315 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	316 retcode = call(["/bin/mycmd", "myarg"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	317
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	318
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	319 Vector example:
33723 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 os.spawnvp(os.P_NOWAIT, path, args)
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 Popen([path] + args[1:])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	324
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	325
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	326 Environment example:
33723 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 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	329 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	330 Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	331 """
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 import sys
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	334 mswindows = (sys.platform == "win32")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	335
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	336 import io
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	337 import os
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	338 import traceback
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	339 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	340 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	341 import builtins
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	342
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	343 # Exception classes used by this module.
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	344 class CalledProcessError(Exception):
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	345 """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	346 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	347 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	348 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	349 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	350 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	351 self.returncode = returncode
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	352 self.cmd = cmd
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	353 self.output = output
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	354 def __str__(self):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	355 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	356
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	357
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	358 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	359 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	360 import msvcrt
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	361 import _subprocess
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	362 class STARTUPINFO:
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	363 dwFlags = 0
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	364 hStdInput = None
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	365 hStdOutput = None
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	366 hStdError = None
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	367 wShowWindow = 0
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	368 class pywintypes:
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	369 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	370 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	371 import select
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	372 _has_poll = hasattr(select, 'poll')
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	373 import errno
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	374 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	375 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	376
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	377 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	378 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	379 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	380 _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	381 import warnings
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	382 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	383 "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	384 "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	385
55179 e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	386 # When select or poll has indicated that the file is writable,
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	387 # we can write up to _PIPE_BUF bytes without risk of blocking.
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	388 # POSIX defines PIPE_BUF as >= 512.
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	389 _PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	390
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	391
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	392 __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	393 "getoutput", "check_output", "CalledProcessError"]
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	394
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	395 if mswindows:
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	396 from _subprocess import CREATE_NEW_CONSOLE, CREATE_NEW_PROCESS_GROUP
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	397 __all__.extend(["CREATE_NEW_CONSOLE", "CREATE_NEW_PROCESS_GROUP"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	398 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	399 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	400 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	401 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	402
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	403 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	404
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	405 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	406 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	407 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	408 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	409 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	410 _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	411 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	412 # 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	413 # 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	414 pass
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	415
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	416 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	417 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	418
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	419
59207 55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	420 def _eintr_retry_call(func, *args):
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	421 while True:
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	422 try:
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	423 return func(*args)
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	424 except OSError as e:
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	425 if e.errno == errno.EINTR:
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	426 continue
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	427 raise
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	428
55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	429
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	430 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	431 """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	432 return the returncode attribute.
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 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	435
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	436 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	437 """
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	438 return Popen(popenargs, *kwargs).wait()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	439
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	440
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	441 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	442 """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	443 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	444 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	445 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	446
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	447 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	448
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	449 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	450 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	451 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	452 if retcode:
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	453 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	454 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	455 cmd = popenargs[0]
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	456 raise CalledProcessError(retcode, cmd)
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	457 return 0
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	458
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	459
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	460 def check_output(popenargs, *kwargs):
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	461 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	462
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	463 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	464 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	465 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	466
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	467 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	468
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	469 >>> check_output(["ls", "-l", "/dev/null"])
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	470 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	471
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	472 The stdout argument is not allowed as it is used internally.
57960 ffd800ef46ea Recorded merge of revisions 77086 via svnmerge from Georg Brandl <georg@python.org> parents: 57817 diff changeset	473 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	474
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	475 >>> check_output(["/bin/sh", "-c",
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	476 ... "ls -l non_existent_file ; exit 0"],
57960 ffd800ef46ea Recorded merge of revisions 77086 via svnmerge from Georg Brandl <georg@python.org> parents: 57817 diff changeset	477 ... stderr=STDOUT)
57817 c9a5b3a460ff Recorded merge of revisions 76925 via svnmerge from Georg Brandl <georg@python.org> parents: 57155 diff changeset	478 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	479 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	480 if 'stdout' in kwargs:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	481 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	482 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	483 output, unused_err = process.communicate()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	484 retcode = process.poll()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	485 if retcode:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	486 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	487 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	488 cmd = popenargs[0]
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	489 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	490 return output
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	491
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	492
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	493 def list2cmdline(seq):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	494 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	495 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	496 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	497
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	498 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	499 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	500
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	501 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	502 interpreted as a single argument, regardless of white space
62402 ef8a2ab26e9f Merged revisions 82075 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61793 diff changeset	503 contained within. A quoted string can be embedded in an
ef8a2ab26e9f Merged revisions 82075 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61793 diff changeset	504 argument.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	505
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	506 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	507 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	508
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	509 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	510 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	511
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	512 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	513 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	514 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	515 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	516 described in rule 3.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	517 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	518
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	519 # See
57155 a7ac4dbde5db Merged revisions 76168 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55303 diff changeset	520 # http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
a7ac4dbde5db Merged revisions 76168 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55303 diff changeset	521 # or search http://msdn.microsoft.com for
a7ac4dbde5db Merged revisions 76168 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55303 diff changeset	522 # "Parsing C++ Command-Line Arguments"
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	523 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	524 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	525 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	526 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	527
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	528 # 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	529 if result:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	530 result.append(' ')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	531
62402 ef8a2ab26e9f Merged revisions 82075 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61793 diff changeset	532 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	533 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	534 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	535
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	536 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	537 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	538 # 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	539 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	540 elif c == '"':
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	541 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	542 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	543 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	544 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	545 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	546 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	547 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	548 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	549 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	550 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	551
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	552 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	553 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	554 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	555
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	556 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	557 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	558 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	559
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	560 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	561
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	562
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	563 # 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	564 #
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	565 # NB This only works (and is only relevant) for UNIX.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	566
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	567 def getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	568 """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	569
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	570 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	571 (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	572 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	573 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	574 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	575
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	576 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	577 >>> 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	578 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	579 >>> 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	580 (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	581 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	582 (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	583 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	584 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	585 text = pipe.read()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	586 sts = pipe.close()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	587 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	588 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	589 return sts, text
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	590
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	591
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	592 def getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	593 """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	594
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	595 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	596 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	597
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	598 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	599 >>> 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	600 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	601 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	602 return getstatusoutput(cmd)[1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	603
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	604
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	605 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	606 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	607 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	608 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	609 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	610 startupinfo=None, creationflags=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	611 restore_signals=True, start_new_session=False):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	612 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	613 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	614
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	615 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	616 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	617 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	618 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	619 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	620
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	621 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	622 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	623 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	624 "platforms")
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	625 if close_fds and (stdin is not None or stdout is not None or
9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	626 stderr is not None):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	627 raise ValueError("close_fds is not supported on Windows "
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	628 "platforms if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	629 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	630 # POSIX
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	631 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	632 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	633 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	634 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	635 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	636 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	637
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	638 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	639 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	640 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	641 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	642 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	643 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	644
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	645 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	646 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	647 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	648 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	649 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	650 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	651 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	652 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	653 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	654 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	655 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	656 # 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	657 # 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	658 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	659
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	660 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	661 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	662 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	663
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	664 self._execute_child(args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	665 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	666 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	667 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	668 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	669 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	670 restore_signals, start_new_session)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	671
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	672 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	673 if p2cwrite != -1:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	674 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	675 if c2pread != -1:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	676 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	677 if errread != -1:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	678 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	679
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	680 if bufsize == 0:
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	681 bufsize = 1 # Nearly unbuffered (XXX for now)
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	682 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	683 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	684 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	685 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	686 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	687 self.stdout = io.open(c2pread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	688 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	689 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	690 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	691 self.stderr = io.open(errread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	692 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	693 self.stderr = io.TextIOWrapper(self.stderr)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	694
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	695
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	696 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	697 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	698 return data.decode(encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	699
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	700
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	701 def __del__(self, _maxsize=sys.maxsize, _active=_active):
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	702 if not self._child_created:
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	703 # 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	704 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	705 # In case the child hasn't been waited on, check if it's done.
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	706 self._internal_poll(_deadstate=_maxsize)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	707 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	708 # 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	709 _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	710
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	711
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	712 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	713 """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	714 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	715 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	716 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	717 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	718
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	719 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	720
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	721 # 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	722 # 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	723 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	724 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	725 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	726 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	727 if input:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	728 self.stdin.write(input)
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	729 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	730 elif self.stdout:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	731 stdout = 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	732 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	733 elif self.stderr:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	734 stderr = 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	735 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	736 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	737 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	738
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	739 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	740
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	741
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	742 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	743 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	744
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	745
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	746 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	747 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	748 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	749 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	750 def _get_handles(self, stdin, stdout, stderr):
55303 1c57debf97bc Merged revisions 73930-73932,73937-73939,73945,73951,73954,73962-73963,73970 via svnmerge from Alexandre Vassalotti <alexandre@peadrop.com> parents: 55179 diff changeset	751 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	752 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	753 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	754 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	755 return (-1, -1, -1, -1, -1, -1)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	756
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	757 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	758 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	759 errread, errwrite = -1, -1
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	760
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	761 if stdin is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	762 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	763 if p2cread is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	764 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	765 elif stdin == PIPE:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	766 p2cread, p2cwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	767 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	768 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	769 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	770 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	771 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	772 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	773
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	774 if stdout is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	775 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	776 if c2pwrite is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	777 _, 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	778 elif stdout == PIPE:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	779 c2pread, c2pwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	780 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	781 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	782 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	783 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	784 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	785 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	786
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	787 if stderr is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	788 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	789 if errwrite is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	790 _, 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	791 elif stderr == PIPE:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	792 errread, errwrite = _subprocess.CreatePipe(None, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	793 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	794 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	795 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	796 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	797 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	798 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	799 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	800 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	801
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	802 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	803 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	804 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	805
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	806
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	807 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	808 """Return a duplicate of handle, which is inheritable"""
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	809 return _subprocess.DuplicateHandle(_subprocess.GetCurrentProcess(),
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	810 handle, _subprocess.GetCurrentProcess(), 0, 1,
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	811 _subprocess.DUPLICATE_SAME_ACCESS)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	812
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	813
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	814 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	815 """Find and return absolut path to w9xpopen.exe"""
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	816 w9xpopen = os.path.join(
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	817 os.path.dirname(_subprocess.GetModuleFileName(0)),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	818 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	819 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	820 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	821 # 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	822 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	823 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	824 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	825 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	826 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	827 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	828 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	829
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	830
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	831 def _execute_child(self, args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	832 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	833 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	834 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	835 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	836 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	837 unused_restore_signals, unused_start_new_session):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	838 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	839
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	840 if not isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	841 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	842
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	843 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	844 if startupinfo is None:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	845 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	846 if -1 not in (p2cread, c2pwrite, errwrite):
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	847 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	848 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	849 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	850 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	851
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	852 if shell:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	853 startupinfo.dwFlags \|= _subprocess.STARTF_USESHOWWINDOW
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	854 startupinfo.wShowWindow = _subprocess.SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	855 comspec = os.environ.get("COMSPEC", "cmd.exe")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	856 args = comspec + " /c " + args
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	857 if (_subprocess.GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	858 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	859 # 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	860 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	861 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	862 # (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	863 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	864 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	865 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	866 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	867 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	868 # 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	869 # 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	870 # kill children.
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	871 creationflags \|= _subprocess.CREATE_NEW_CONSOLE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	872
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	873 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	874 try:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	875 hp, ht, pid, tid = _subprocess.CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	876 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	877 None, None,
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	878 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	879 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	880 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	881 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	882 startupinfo)
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	883 except pywintypes.error as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	884 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	885 # a subclass of OSError. FIXME: We should really
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	886 # translate errno using _sys_errlist (or simliar), but
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	887 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	888 raise WindowsError(*e.args)
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 # 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	891 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	892 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	893 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	894 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	895
33727 0236b6530c46 Typo fix Andrew M. Kuchling <amk@amk.ca> parents: 33723 diff changeset	896 # Child is launched. Close the parent's copy of those pipe
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	897 # handles that only the child should have open. You need
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	898 # to make sure that no handles to the write end of the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	899 # output pipe are maintained in this process or else the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	900 # pipe will not close when the child process exits and the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	901 # ReadFile will hang.
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	902 if p2cread != -1:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	903 p2cread.Close()
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	904 if c2pwrite != -1:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	905 c2pwrite.Close()
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	906 if errwrite != -1:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	907 errwrite.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	908
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	909
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	910 def _internal_poll(self, _deadstate=None,
61584 fa902f8e0db0 Merged revisions 81179 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61565 diff changeset	911 _WaitForSingleObject=_subprocess.WaitForSingleObject,
fa902f8e0db0 Merged revisions 81179 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61565 diff changeset	912 _WAIT_OBJECT_0=_subprocess.WAIT_OBJECT_0,
fa902f8e0db0 Merged revisions 81179 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61565 diff changeset	913 _GetExitCodeProcess=_subprocess.GetExitCodeProcess):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	914 """Check if child process has terminated. Returns returncode
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	915 attribute.
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	916
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	917 This method is called by __del__, so it can only refer to objects
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	918 in its local scope.
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	919
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	920 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	921 if self.returncode is None:
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	922 if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	923 self.returncode = _GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	924 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	925
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	926
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	927 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	928 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	929 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	930 if self.returncode is None:
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	931 _subprocess.WaitForSingleObject(self._handle,
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	932 _subprocess.INFINITE)
64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	933 self.returncode = _subprocess.GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	934 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	935
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	936
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	937 def _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	938 buffer.append(fh.read())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	939
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	940
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	941 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	942 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	943 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	944
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	945 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	946 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	947 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	948 args=(self.stdout, stdout))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	949 stdout_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	950 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	951 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	952 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	953 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	954 args=(self.stderr, stderr))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	955 stderr_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	956 stderr_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	957
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	958 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	959 if input is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	960 self.stdin.write(input)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	961 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	962
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	963 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	964 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	965 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	966 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	967
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	968 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	969 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	970 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	971 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	972 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	973
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	974 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	975 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	976
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	977 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	978 """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	979 """
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	980 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	981 self.terminate()
60556 a2f5b3b19eb2 Port #1220212 (os.kill for Win32) to py3k. Brian Curtin <brian.curtin@gmail.com> parents: 59619 diff changeset	982 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	983 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	984 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	985 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	986 else:
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	987 raise ValueError("Only SIGTERM is supported on Windows")
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	988
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	989 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	990 """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	991 """
60922 64461f68a10e Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 60902 diff changeset	992 _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	993
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	994 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	995
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	996 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	997 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	998 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	999 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1000 def _get_handles(self, stdin, stdout, stderr):
55303 1c57debf97bc Merged revisions 73930-73932,73937-73939,73945,73951,73954,73962-73963,73970 via svnmerge from Alexandre Vassalotti <alexandre@peadrop.com> parents: 55179 diff changeset	1001 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1002 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003 """
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	1004 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	1005 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	1006 errread, errwrite = -1, -1
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1007
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1008 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1009 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1010 elif stdin == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1011 p2cread, p2cwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1012 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1013 p2cread = stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1014 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1015 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1016 p2cread = stdin.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1017
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1018 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1019 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1020 elif stdout == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1021 c2pread, c2pwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1022 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1024 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1025 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1026 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1027
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1028 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1029 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1030 elif stderr == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1031 errread, errwrite = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1032 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1033 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1034 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1035 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1036 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1037 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1038 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1039
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1040 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1041 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1042 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1043
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 def _set_cloexec_flag(self, fd):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1046 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1047 cloexec_flag = fcntl.FD_CLOEXEC
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1048 except AttributeError:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1049 cloexec_flag = 1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1050
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1051 old = fcntl.fcntl(fd, fcntl.F_GETFD)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1052 fcntl.fcntl(fd, fcntl.F_SETFD, old \| cloexec_flag)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1053
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1054
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1055 def _close_fds(self, but):
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1056 os.closerange(3, but)
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1057 os.closerange(but + 1, MAXFD)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1058
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1059
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1060 def _execute_child(self, args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1061 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1062 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1063 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1064 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	1065 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	1066 restore_signals, start_new_session):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1067 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1068
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	1069 if isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1070 args = [args]
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1071 else:
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1072 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1073
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1074 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1075 args = ["/bin/sh", "-c"] + args
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1076
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1077 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1078 executable = args[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1079
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	1080 # 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	1081 # 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	1082 # Pickle is not used; it is complex and involves memory allocation.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1083 errpipe_read, errpipe_write = os.pipe()
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1084 try:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1085 try:
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1086 self._set_cloexec_flag(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1087
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	1088 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	1089 # 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	1090 # 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	1091 # 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	1092 # 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	1093
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1094 if env:
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	1095 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	1096 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	1097 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	1098 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	1099 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	1100 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	1101 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	1102 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	1103 # 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	1104 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	1105 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	1106 for dir in os.get_exec_path(env))
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	1107 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	1108 args, executable_list,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1109 close_fds, cwd, env_list,
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1110 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	1111 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	1112 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	1113 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	1114 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	1115 # 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	1116 # 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	1117 # 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	1118
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1119 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	1120 # 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	1121 # 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	1122 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	1123 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	1124 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	1125 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	1126 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	1127 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	1128 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	1129 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	1130 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	1131 # 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	1132 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	1133 # 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	1134 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	1135 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	1136 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	1137 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	1138 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	1139 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	1140 os.close(errpipe_read)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1141
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 # Dup fds for 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	1143 if p2cread != -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	1144 os.dup2(p2cread, 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	1145 if c2pwrite != -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	1146 os.dup2(c2pwrite, 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	1147 if errwrite != -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	1148 os.dup2(errwrite, 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	1149
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1150 # 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	1151 # same fd more than once, or standard fds.
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1152 if p2cread != -1 and p2cread not in (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	1153 os.close(p2cread)
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1154 if (c2pwrite != -1 and
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1155 c2pwrite not in (p2cread, 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	1156 os.close(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	1157 if (errwrite != -1 and
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1158 errwrite not in (p2cread, c2pwrite, 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	1159 os.close(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	1160
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 # 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	1162 if close_fds:
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1163 self._close_fds(but=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	1164
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1165 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	1166 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	1167
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 # 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	1169 # _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	1170 # 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	1171 # 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	1172 # 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	1173 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	1174 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	1175 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	1176 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	1177 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	1178 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	1179
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 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	1181 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	1182
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1183 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	1184 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	1185
768722b2ae0a * Replaces the internals of the subprocess module from fork through exec on Gregory P. Smith <greg@mad-scientist.com> parents: 59471 diff changeset	1186 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	1187 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	1188 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	1189 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	1190
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 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	1192 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	1193 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	1194 if isinstance(exc_value, OSError):
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 errno = exc_value.errno
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 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	1197 errno = 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	1198 message = '%s:%x:%s' % (exc_type.__name__,
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 errno, 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	1200 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	1201 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	1202 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	1203 # 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	1204 # 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	1205 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	1206
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 # 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	1208 # 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	1209 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	1210
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 # Parent
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1212 if gc_was_enabled:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1213 gc.enable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1214 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1215 # 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	1216 os.close(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1217
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	1218 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	1219 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	1220 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	1221 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	1222 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	1223 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1224
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1225 # 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	1226 # 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	1227 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	1228 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	1229 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	1230 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	1231 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	1232 break
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1233 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1234 # 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	1235 os.close(errpipe_read)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1236
41731 78d76435da9a Make test_sys pass. Guido van Rossum <guido@python.org> parents: 41699 diff changeset	1237 if data:
59207 55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	1238 _eintr_retry_call(os.waitpid, self.pid, 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	1239 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	1240 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	1241 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	1242 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	1243 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	1244 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	1245 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	1246 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	1247 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	1248 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	1249 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	1250 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	1251 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	1252 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	1253 if issubclass(child_exception_type, OSError) and hex_errno:
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 errno = int(hex_errno, 16)
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 if errno != 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	1256 err_msg = os.strerror(errno)
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 raise child_exception_type(errno, err_msg)
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 raise child_exception_type(err_msg)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1259
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1260
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1261 def _handle_exitstatus(self, sts, _WIFSIGNALED=os.WIFSIGNALED,
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1262 _WTERMSIG=os.WTERMSIG, _WIFEXITED=os.WIFEXITED,
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1263 _WEXITSTATUS=os.WEXITSTATUS):
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1264 # This method is called (indirectly) by __del__, so it cannot
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1265 # refer to anything outside of its local scope."""
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1266 if _WIFSIGNALED(sts):
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1267 self.returncode = -_WTERMSIG(sts)
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1268 elif _WIFEXITED(sts):
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1269 self.returncode = _WEXITSTATUS(sts)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1270 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1271 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1272 raise RuntimeError("Unknown child exit status!")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1273
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1274
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1275 def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1276 _WNOHANG=os.WNOHANG, _os_error=os.error):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1277 """Check if child process has terminated. Returns returncode
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1278 attribute.
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1279
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1280 This method is called by __del__, so it cannot reference anything
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1281 outside of the local scope (nor can any methods it calls).
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1282
ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1283 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1284 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1285 try:
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1286 pid, sts = _waitpid(self.pid, _WNOHANG)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1287 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1288 self._handle_exitstatus(sts)
61565 ccf1ca73c0e9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 61406 diff changeset	1289 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	1290 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	1291 self.returncode = _deadstate
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1292 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1293
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1294
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1295 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1296 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1297 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1298 if self.returncode is None:
59207 55778855cd25 Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57960 diff changeset	1299 pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1300 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1301 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1302
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1303
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1304 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	1305 if self.stdin:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1306 # 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	1307 # 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	1308 self.stdin.flush()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1309 if not input:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1310 self.stdin.close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1311
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1312 if _has_poll:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1313 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	1314 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1315 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	1316
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1317 # 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	1318 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	1319 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	1320 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	1321 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	1322
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1323 # 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	1324 # 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	1325 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	1326 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	1327 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	1328 self.stdout.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1329 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	1330 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	1331 self.stderr.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1332
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1333 self.wait()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1334 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1335
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1336
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1337 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	1338 stdout = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1339 stderr = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1340 fd2file = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1341 fd2output = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1342
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1343 poller = select.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1344 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	1345 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	1346 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	1347
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1348 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	1349 poller.unregister(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1350 fd2file[fd].close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1351 fd2file.pop(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1352
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1353 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	1354 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	1355
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1356 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	1357 if self.stdout:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1358 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	1359 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	1360 if self.stderr:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1361 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	1362 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	1363
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1364 input_offset = 0
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1365 while fd2file:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1366 try:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1367 ready = poller.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1368 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	1369 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	1370 continue
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1371 raise
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1372
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1373 # 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	1374 # 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	1375
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1376 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	1377 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	1378 chunk = input[input_offset : input_offset + _PIPE_BUF]
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1379 input_offset += os.write(fd, chunk)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1380 if input_offset >= len(input):
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1381 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	1382 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	1383 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	1384 if not data:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1385 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	1386 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	1387 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1388 # 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	1389 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	1390
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1391 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1392
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1393
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1394 def _communicate_with_select(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1395 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1396 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1397 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1398 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1399
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1400 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	1401 write_set.append(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1402 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1403 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1404 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1405 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1406 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1407 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1408
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1409 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1410 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	1411 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	1412 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	1413 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	1414 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	1415 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	1416 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1417
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1418 # 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	1419 # 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	1420
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1421 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	1422 chunk = input[input_offset : input_offset + _PIPE_BUF]
43487 8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1423 bytes_written = os.write(self.stdin.fileno(), chunk)
40742 f1701ba2452b Merged revisions 53538-53622 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40644 diff changeset	1424 input_offset += bytes_written
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1425 if input_offset >= len(input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1426 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1427 write_set.remove(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1428
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1429 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1430 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	1431 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1432 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1433 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1434 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1435
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1436 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1437 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	1438 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1439 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1440 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1441 stderr.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1442
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1443 return (stdout, stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1444
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1445
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	1446 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	1447 """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	1448 """
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	1449 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	1450
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	1451 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	1452 """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	1453 """
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	1454 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	1455
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	1456 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	1457 """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	1458 """
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	1459 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	1460
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1461
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1462 def _demo_posix():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1463 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1464 # Example 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1465 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1466 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	1467 print("Process list:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1468 print(plist)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1469
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1470 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1471 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1472 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1473 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1474 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1475 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1476
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1477 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1478 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1479 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1480 print("Looking for 'hda'...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1481 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1482 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	1483 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1484
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1485 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1486 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1487 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1488 print()
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1489 print("Trying a weird file...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1490 try:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1491 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	1492 except OSError as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1493 if e.errno == errno.ENOENT:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1494 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	1495 print("Child traceback:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1496 print(e.child_traceback)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1497 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1498 print("Error", e.errno)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1499 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1500 print("Gosh. No error.", file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1501
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1502
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1503 def _demo_windows():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1504 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1505 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1506 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1507 print("Looking for 'PROMPT' in set output...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1508 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1509 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	1510 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1511
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1512 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1513 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1514 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1515 print("Executing calc...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1516 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1517 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1518
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1519
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1520 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1521 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1522 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1523 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1524 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 62799:dcc2e8bf64cf