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

annotate Lib/subprocess.py @ 55179:e89faaafa3ee

Merged revisions 73916 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r73916 | amaury.forgeotdarc | 2009-07-10 00:37:22 +0200 (ven., 10 juil. 2009) | 5 lines #6416: Fix compilation of the select module on Windows, as well as test_subprocess: PIPE_BUF is not defined on Windows, and probably has no meaning there. Anyway the subprocess module uses another way to perform non-blocking reads (with a thread) ........

author	Amaury Forgeot d'Arc <amauryfa@gmail.com>
date	Thu, 09 Jul 2009 22:44:11 +0000
parents	680ad8eed33b
children	1c57debf97bc

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,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	32 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	33
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 Arguments are:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	36
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	37 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	38 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	39 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	40
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	41 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	42 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	43 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	44 as the only item (the program to execute).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	45
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	46 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	47 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	48 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	49 will be treated as additional shell arguments.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	50
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	51 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	52 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	53 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	54 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	55 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	56 rules as the MS C runtime.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	57
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	58 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	59 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	60 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	61 (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	62 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	63 bufsize is 0 (unbuffered).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	64
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	65 stdin, stdout and stderr specify the executed programs' standard
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	66 input, standard output and standard error file handles, respectively.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	67 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	68 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	69 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	70 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	71 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	72 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	73 file handle as for stdout.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	74
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	75 If preexec_fn is set to a callable object, this object will be called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	76 in the child process just before the child is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	77
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	78 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	79 closed before the child process is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	80
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	81 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	82 shell.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	83
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	84 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	85 before the child is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	86
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	87 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	88 process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	89
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	90 If 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	91 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	92 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	93 '\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	94 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	95 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	96 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	97 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	98
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	99 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	100 underlying CreateProcess() function. They can specify things such as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	101 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	102 (Windows only)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	103
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	104
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	105 This module also defines some shortcut functions:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	106
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	107 call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	108 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	109 return the returncode attribute.
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 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	112
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	113 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	114
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	115 check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	116 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	117 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	118 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	119 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	120
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	121 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	122
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	123 check_call(["ls", "-l"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	124
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	125 getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	126 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	127
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	128 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	129 (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	130 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	131 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	132 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	133
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	134 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	135 >>> 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	136 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	137 >>> 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	138 (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	139 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	140 (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	141
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	142 getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	143 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	144
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	145 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	146 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	147
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	148 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	149 >>> 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	150 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	151
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	152 check_output(popenargs, *kwargs):
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	153 Run command with arguments and return its output as a byte string.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	154
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	155 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	156 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	157 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	158
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	159 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	160
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	161 output = subprocess.check_output(["ls", "-l", "/dev/null"])
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	162
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	163
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	164 Exceptions
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	165 ----------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	166 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	167 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	168 the exception object will have one extra attribute called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	169 'child_traceback', which is a string containing traceback information
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	170 from the childs point of view.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	171
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	172 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	173 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	174 should prepare for OSErrors.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	175
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	176 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	177
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	178 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	179 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	180
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	181
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	182 Security
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	183 --------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	184 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	185 /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	186 metacharacters, can safely be passed to child processes.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	187
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	188
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	189 Popen objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	190 =============
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	191 Instances of the Popen class have the following methods:
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 poll()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	194 Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	195 attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	196
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	197 wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	198 Wait for child process to terminate. Returns returncode attribute.
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 communicate(input=None)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	201 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	202 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	203 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	204 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	205 the child.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	206
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	207 communicate() returns a tuple (stdout, stderr).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	208
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	209 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	210 method if the data size is large or unlimited.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	211
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	212 The following attributes are also available:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	213
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	214 stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	215 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	216 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	217
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	218 stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	219 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	220 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	221 None.
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 stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	224 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	225 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	226 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	227
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	228 pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	229 The process ID of the child process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	230
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	231 returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	232 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	233 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	234 child was terminated by signal N (UNIX only).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	235
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	236
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	237 Replacing older functions with the subprocess module
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 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	240 for a.
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 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	243 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	244 exception.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	245
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	246 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	247 imported with "from subprocess import *".
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	248
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 Replacing /bin/sh shell backquote
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	251 ---------------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	252 output=`mycmd myarg`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	253 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	254 output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	255
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 Replacing shell pipe line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	258 -------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	259 output=`dmesg \| grep hda`
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 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	262 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	263 output = p2.communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	264
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	265
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	266 Replacing os.system()
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 sts = os.system("mycmd" + " myarg")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	269 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	270 p = Popen("mycmd" + " myarg", shell=True)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	271 pid, sts = os.waitpid(p.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	272
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	273 Note:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	274
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	275 * 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	276
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	277 * 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	278 exitstatus.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	279
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	280 A more real-world example would look like this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	281
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	282 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	283 retcode = call("mycmd" + " myarg", shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	284 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	285 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	286 else:
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	287 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	288 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	289 print("Execution failed:", e, file=sys.stderr)
33723 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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	292 Replacing os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	293 -------------------
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	294 P_NOWAIT example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	295
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	296 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	297 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	298 pid = Popen(["/bin/mycmd", "myarg"]).pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	299
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	300
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	301 P_WAIT example:
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 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	304 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	305 retcode = call(["/bin/mycmd", "myarg"])
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
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	308 Vector example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	309
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	310 os.spawnvp(os.P_NOWAIT, path, args)
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 Popen([path] + args[1:])
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
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	315 Environment example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	316
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	317 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	318 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	319 Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	322 import sys
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	323 mswindows = (sys.platform == "win32")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	324
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	325 import io
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	326 import os
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	327 import traceback
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	328 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	329 import signal
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	330
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	331 # Exception classes used by this module.
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	332 class CalledProcessError(Exception):
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	333 """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	334 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	335 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	336 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	337 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	338 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	339 self.returncode = returncode
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	340 self.cmd = cmd
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	341 self.output = output
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	342 def __str__(self):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	343 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	344
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	345
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	346 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	347 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	348 import msvcrt
33751 aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	349 if 0: # <-- change this to use pywin32 instead of the _subprocess driver
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	350 import pywintypes
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	351 from win32api import GetStdHandle, STD_INPUT_HANDLE, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	352 STD_OUTPUT_HANDLE, STD_ERROR_HANDLE
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	353 from win32api import GetCurrentProcess, DuplicateHandle, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	354 GetModuleFileName, GetVersion
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	355 from win32con import DUPLICATE_SAME_ACCESS, SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	356 from win32pipe import CreatePipe
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	357 from win32process import CreateProcess, STARTUPINFO, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	358 GetExitCodeProcess, 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	359 STARTF_USESHOWWINDOW, CREATE_NEW_CONSOLE
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	360 from win32process import TerminateProcess
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	361 from win32event import WaitForSingleObject, INFINITE, WAIT_OBJECT_0
33751 aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	362 else:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	363 from _subprocess import *
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	364 class STARTUPINFO:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	365 dwFlags = 0
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	366 hStdInput = None
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	367 hStdOutput = None
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	368 hStdError = None
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	369 wShowWindow = 0
33751 aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	370 class pywintypes:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	371 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	372 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	373 import select
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	374 _has_poll = hasattr(select, 'poll')
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	375 import errno
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	376 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	377 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	378
55179 e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	379 # 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	380 # 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	381 # POSIX defines PIPE_BUF as >= 512.
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	382 _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	383
e89faaafa3ee Merged revisions 73916 via svnmerge from Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55602 diff changeset	384
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	385 __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	386 "getoutput", "check_output", "CalledProcessError"]
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	387
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	388 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	389 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	390 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	391 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	392
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	393 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	394
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	395 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	396 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	397 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	398 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	399 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	400 _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	401 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	402 # 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	403 # 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	404 pass
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	405
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	406 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	407 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	408
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	409
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	410 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	411 """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	412 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	413
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	414 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	415
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	416 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	417 """
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	418 return Popen(popenargs, *kwargs).wait()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	419
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	420
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	421 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	422 """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	423 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	424 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	425 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	426
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	427 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	428
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	429 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	430 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	431 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	432 if retcode:
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	433 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	434 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	435 cmd = popenargs[0]
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	436 raise CalledProcessError(retcode, cmd)
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	437 return 0
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	438
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	439
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	440 def check_output(popenargs, *kwargs):
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	441 """Run command with arguments and return its output as a byte string.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	442
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	443 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	444 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	445 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	446
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	447 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	448
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	449 >>> check_output(["ls", "-l", "/dev/null"])
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	450 'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	451
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	452 The stdout argument is not allowed as it is used internally.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	453 To capture standard error in the result, use stderr=subprocess.STDOUT.
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	454
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	455 >>> check_output(["/bin/sh", "-c",
51776 d06a3ebf306f Merged revisions 69846 via svnmerge from Mark Dickinson <dickinsm@gmail.com> parents: 51721 diff changeset	456 "ls -l non_existent_file ; exit 0"],
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	457 stderr=subprocess.STDOUT)
51776 d06a3ebf306f Merged revisions 69846 via svnmerge from Mark Dickinson <dickinsm@gmail.com> parents: 51721 diff changeset	458 '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	459 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	460 if 'stdout' in kwargs:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	461 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	462 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	463 output, unused_err = process.communicate()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	464 retcode = process.poll()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	465 if retcode:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	466 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	467 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	468 cmd = popenargs[0]
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	469 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	470 return output
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	471
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	472
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	473 def list2cmdline(seq):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	474 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	475 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	476 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	477
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	478 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	479 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	480
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	481 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	482 interpreted as a single argument, regardless of white space
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	483 or pipe characters contained within. A quoted string can be
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	484 embedded in an argument.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	485
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	486 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	487 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	488
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	489 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	490 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	491
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	492 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	493 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	494 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	495 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	496 described in rule 3.
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	499 # See
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	500 # http://msdn.microsoft.com/library/en-us/vccelng/htm/progs_12.asp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	501 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	502 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	503 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	504 bs_buf = []
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 # 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	507 if result:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	508 result.append(' ')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	509
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	510 needquote = (" " in arg) or ("\t" in arg) or ("\|" in arg) or not arg
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	511 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	512 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	513
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	514 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	515 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	516 # 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	517 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	518 elif c == '"':
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	519 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	520 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	521 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	522 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	523 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	524 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	525 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	526 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	527 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	528 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	529
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	530 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	531 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	532 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	533
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	534 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	535 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	536 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	537
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	538 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	539
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	540
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	541 # 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	542 #
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	543 # 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	544
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	545 def getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	546 """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	547
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	548 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	549 (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	550 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	551 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	552 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	553
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	554 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	555 >>> 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	556 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	557 >>> 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	558 (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	559 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	560 (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	561 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	562 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	563 text = pipe.read()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	564 sts = pipe.close()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	565 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	566 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	567 return sts, text
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	568
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 def getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	571 """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	572
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	573 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	574 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	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.getoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	578 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	579 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	580 return getstatusoutput(cmd)[1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	581
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	582
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	583 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	584 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	585 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	586 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	587 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	588 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	589 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	590 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	591
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	592 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	593 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	594 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	595 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	596 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	597
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	598 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	599 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	600 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	601 "platforms")
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	602 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	603 stderr is not None):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	604 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	605 "platforms if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	606 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	607 # POSIX
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	608 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	609 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	610 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	611 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	612 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	613 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	614
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	615 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	616 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	617 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	618 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	619 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	620 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	621
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	622 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	623 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	624 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	625 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	626 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	627 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	628 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	629 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	630 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	631 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	632 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	633 # are file descriptors on both platforms. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	634 # are None when not using PIPEs. The child objects are None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	635 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	636
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	637 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	638 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	639 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	640
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	641 self._execute_child(args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	642 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	643 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	644 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	645 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	646 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	647
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	648 if mswindows:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	649 if p2cwrite is not None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	650 p2cwrite = msvcrt.open_osfhandle(p2cwrite.Detach(), 0)
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	651 if c2pread is not None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	652 c2pread = msvcrt.open_osfhandle(c2pread.Detach(), 0)
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	653 if errread is not None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	654 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	655
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	656 if bufsize == 0:
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	657 bufsize = 1 # Nearly unbuffered (XXX for now)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	658 if p2cwrite is not None:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	659 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	660 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	661 self.stdin = io.TextIOWrapper(self.stdin)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	662 if c2pread is not None:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	663 self.stdout = io.open(c2pread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	664 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	665 self.stdout = io.TextIOWrapper(self.stdout)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	666 if errread is not None:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	667 self.stderr = io.open(errread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	668 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	669 self.stderr = io.TextIOWrapper(self.stderr)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	670
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	671
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	672 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	673 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	674 return data.decode(encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	675
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	676
41554 06145fbc7ab9 Merged revisions 53952-54987 via svnmerge from Guido van Rossum <guido@python.org> parents: 40893 diff changeset	677 def __del__(self, sys=sys):
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	678 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	679 # 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	680 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	681 # In case the child hasn't been waited on, check if it's done.
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	682 self._internal_poll(_deadstate=sys.maxsize)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	683 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	684 # 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	685 _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	686
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	687
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	688 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	689 """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	690 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	691 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	692 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	693 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	694
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	695 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	696
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	697 # 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	698 # 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	699 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	700 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	701 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	702 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	703 if input:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	704 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	705 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	706 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	707 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	708 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	709 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	710 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	711 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	712 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	713 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	714
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	715 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	716
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	717
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	718 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	719 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	720
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	721
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	722 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	723 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	724 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	725 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	726 def _get_handles(self, stdin, stdout, stderr):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	727 """Construct and return tupel with IO objects:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	728 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	729 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	730 if stdin is None and stdout is None and stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	731 return (None, None, None, None, None, None)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	732
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	733 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	734 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	735 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	736
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	737 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	738 p2cread = GetStdHandle(STD_INPUT_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	739 if p2cread is None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	740 p2cread, _ = CreatePipe(None, 0)
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	741 elif stdin == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	742 p2cread, p2cwrite = CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	743 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	744 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	745 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	746 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	747 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	748 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	749
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	750 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	751 c2pwrite = GetStdHandle(STD_OUTPUT_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	752 if c2pwrite is None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	753 _, c2pwrite = CreatePipe(None, 0)
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	754 elif stdout == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	755 c2pread, c2pwrite = CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	756 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	757 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	758 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	759 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	760 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	761 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	762
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	763 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	764 errwrite = GetStdHandle(STD_ERROR_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	765 if errwrite is None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	766 _, errwrite = CreatePipe(None, 0)
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	767 elif stderr == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	768 errread, errwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	769 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	770 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	771 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	772 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	773 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	774 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	775 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	776 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	777
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	778 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	779 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	780 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	781
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	782
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	783 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	784 """Return a duplicate of handle, which is inheritable"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	785 return DuplicateHandle(GetCurrentProcess(), handle,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	786 GetCurrentProcess(), 0, 1,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	787 DUPLICATE_SAME_ACCESS)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	788
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	789
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	790 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	791 """Find and return absolut path to w9xpopen.exe"""
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	792 w9xpopen = os.path.join(os.path.dirname(GetModuleFileName(0)),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	793 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	794 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	795 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	796 # 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	797 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	798 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	799 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	800 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	801 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	802 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	803 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	804
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	805
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	806 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	807 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	808 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	809 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	810 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	811 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	812 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	813
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	814 if not isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	815 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	816
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	817 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	818 if startupinfo is None:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	819 startupinfo = STARTUPINFO()
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	820 if None not in (p2cread, c2pwrite, errwrite):
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	821 startupinfo.dwFlags \|= STARTF_USESTDHANDLES
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	822 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	823 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	824 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	825
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	826 if shell:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	827 startupinfo.dwFlags \|= STARTF_USESHOWWINDOW
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	828 startupinfo.wShowWindow = SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	829 comspec = os.environ.get("COMSPEC", "cmd.exe")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	830 args = comspec + " /c " + args
40644 1c26505c1de6 Rip out 'long' and 'L'-suffixed integer literals. Guido van Rossum <guido@python.org> parents: 40643 diff changeset	831 if (GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	832 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	833 # 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	834 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	835 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	836 # (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	837 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	838 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	839 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	840 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	841 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	842 # 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	843 # 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	844 # kill children.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	845 creationflags \|= CREATE_NEW_CONSOLE
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	846
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	847 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	848 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	849 hp, ht, pid, tid = CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	850 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	851 None, None,
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	852 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	853 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	854 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	855 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	856 startupinfo)
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	857 except pywintypes.error as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	858 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	859 # a subclass of OSError. FIXME: We should really
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	860 # translate errno using _sys_errlist (or simliar), but
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	861 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	862 raise WindowsError(*e.args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	863
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	864 # 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	865 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	866 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	867 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	868 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	869
33727 0236b6530c46 Typo fix Andrew M. Kuchling <amk@amk.ca> parents: 33723 diff changeset	870 # 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	871 # 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	872 # 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	873 # 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	874 # 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	875 # ReadFile will hang.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	876 if p2cread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	877 p2cread.Close()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	878 if c2pwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	879 c2pwrite.Close()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	880 if errwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	881 errwrite.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	882
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	883
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	884 def _internal_poll(self, _deadstate=None):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	885 """Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	886 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	887 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	888 if WaitForSingleObject(self._handle, 0) == WAIT_OBJECT_0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	889 self.returncode = GetExitCodeProcess(self._handle)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	890 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	891
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	892
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	893 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	894 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	895 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	896 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	897 obj = WaitForSingleObject(self._handle, INFINITE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	898 self.returncode = GetExitCodeProcess(self._handle)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	899 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	900
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	901
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	902 def _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	903 buffer.append(fh.read())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	904
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	905
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	906 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	907 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	908 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	909
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	910 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	911 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	912 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	913 args=(self.stdout, stdout))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	914 stdout_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	915 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	916 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	917 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	918 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	919 args=(self.stderr, stderr))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	920 stderr_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	921 stderr_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	922
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	923 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	924 if input is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	925 self.stdin.write(input)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	926 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	927
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	928 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	929 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	930 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	931 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	932
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	933 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	934 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	935 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	936 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	937 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	938
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	939 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	940 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	941
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	942 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	943 """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	944 """
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	945 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	946 self.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	947 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	948 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	949
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	950 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	951 """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	952 """
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	953 TerminateProcess(self._handle, 1)
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	954
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	955 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	956
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	957 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	958 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	959 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	960 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	961 def _get_handles(self, stdin, stdout, stderr):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	962 """Construct and return tupel with IO objects:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	963 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	964 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	965 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	966 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	967 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	968
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	969 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	970 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	971 elif stdin == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	972 p2cread, p2cwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	973 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	974 p2cread = stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	975 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	976 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	977 p2cread = stdin.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	978
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	979 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	980 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	981 elif stdout == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	982 c2pread, c2pwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	983 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	984 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	985 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	986 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	987 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	988
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	989 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	990 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	991 elif stderr == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	992 errread, errwrite = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	993 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	994 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	995 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	996 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	997 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	998 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	999 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1000
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1001 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1002 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1004
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1005
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1006 def _set_cloexec_flag(self, fd):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1007 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1008 cloexec_flag = fcntl.FD_CLOEXEC
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1009 except AttributeError:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1010 cloexec_flag = 1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1011
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1012 old = fcntl.fcntl(fd, fcntl.F_GETFD)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1013 fcntl.fcntl(fd, fcntl.F_SETFD, old \| cloexec_flag)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1014
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1015
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1016 def _close_fds(self, but):
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1017 os.closerange(3, but)
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1018 os.closerange(but + 1, MAXFD)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1019
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1020
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1021 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	1022 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1024 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1025 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1026 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1027 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1028
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	1029 if isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1030 args = [args]
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1031 else:
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1032 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1033
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1034 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1035 args = ["/bin/sh", "-c"] + args
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1036
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1037 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1038 executable = args[0]
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 # For transferring possible exec failure from child to parent
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1041 # The first char specifies the exception type: 0 means
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1042 # OSError, 1 means some other error.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1043 errpipe_read, errpipe_write = os.pipe()
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1044 try:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1045 try:
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1046 self._set_cloexec_flag(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1047
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1048 gc_was_enabled = gc.isenabled()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1049 # Disable gc to avoid bug where gc -> file_dealloc ->
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1050 # write to stderr -> hang. http://bugs.python.org/issue1336
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1051 gc.disable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1052 try:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1053 self.pid = os.fork()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1054 except:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1055 if gc_was_enabled:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1056 gc.enable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1057 raise
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1058 self._child_created = True
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1059 if self.pid == 0:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1060 # Child
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1061 try:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1062 # Close parent's pipe ends
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1063 if p2cwrite is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1064 os.close(p2cwrite)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1065 if c2pread is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1066 os.close(c2pread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1067 if errread is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1068 os.close(errread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1069 os.close(errpipe_read)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1070
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1071 # Dup fds for child
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1072 if p2cread is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1073 os.dup2(p2cread, 0)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1074 if c2pwrite is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1075 os.dup2(c2pwrite, 1)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1076 if errwrite is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1077 os.dup2(errwrite, 2)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1078
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1079 # Close pipe fds. Make sure we don't close the
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1080 # same fd more than once, or standard fds.
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1081 if p2cread is not None and p2cread not in (0,):
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1082 os.close(p2cread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1083 if c2pwrite is not None and \
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1084 c2pwrite not in (p2cread, 1):
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1085 os.close(c2pwrite)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1086 if (errwrite is not None and
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1087 errwrite not in (p2cread, c2pwrite, 2)):
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1088 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1089
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1090 # Close all other fds, if asked for
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1091 if close_fds:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1092 self._close_fds(but=errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1093
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1094 if cwd is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1095 os.chdir(cwd)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1096
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1097 if preexec_fn:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1098 preexec_fn()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1099
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1100 if env is None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1101 os.execvp(executable, args)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1102 else:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1103 os.execvpe(executable, args, env)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1104
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1105 except:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1106 exc_type, exc_value, tb = sys.exc_info()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1107 # Save the traceback and attach it to the exception
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1108 # object
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1109 exc_lines = traceback.format_exception(exc_type,
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1110 exc_value,
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1111 tb)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1112 exc_value.child_traceback = ''.join(exc_lines)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1113 os.write(errpipe_write, pickle.dumps(exc_value))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1114
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1115 # This exitcode won't be reported to applications, so
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1116 # it really doesn't matter what we return.
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1117 os._exit(255)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1118
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1119 # Parent
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1120 if gc_was_enabled:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1121 gc.enable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1122 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1123 # 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	1124 os.close(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1125
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1126 if p2cread is not None and p2cwrite is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1127 os.close(p2cread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1128 if c2pwrite is not None and c2pread is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1129 os.close(c2pwrite)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1130 if errwrite is not None and errread is not None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1131 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1132
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1133 # Wait for exec to fail or succeed; possibly raising an
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1134 # exception (limited to 1 MB)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1135 data = os.read(errpipe_read, 1048576)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1136 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1137 # 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	1138 os.close(errpipe_read)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1139
41731 78d76435da9a Make test_sys pass. Guido van Rossum <guido@python.org> parents: 41699 diff changeset	1140 if data:
34303 cb30cfcb39e7 On UNIX, when the execution of the child fails, we must waitpid() to Peter Astrand <astrand@lysator.liu.se> parents: 34302 diff changeset	1141 os.waitpid(self.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1142 child_exception = pickle.loads(data)
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	1143 for fd in (p2cwrite, c2pread, errread):
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	1144 if fd is not None:
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	1145 os.close(fd)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1146 raise child_exception
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1147
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1148
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1149 def _handle_exitstatus(self, sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1150 if os.WIFSIGNALED(sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1151 self.returncode = -os.WTERMSIG(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1152 elif os.WIFEXITED(sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1153 self.returncode = os.WEXITSTATUS(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1154 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1155 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1156 raise RuntimeError("Unknown child exit status!")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1157
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1158
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	1159 def _internal_poll(self, _deadstate=None):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1160 """Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1161 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1162 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1163 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1164 pid, sts = os.waitpid(self.pid, os.WNOHANG)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1165 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1166 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1167 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	1168 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	1169 self.returncode = _deadstate
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1170 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1171
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1172
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1173 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1174 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1175 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1176 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1177 pid, sts = os.waitpid(self.pid, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1178 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1179 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1180
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1181
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1182 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	1183 if self.stdin:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1184 # 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	1185 # 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	1186 self.stdin.flush()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1187 if not input:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1188 self.stdin.close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1189
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1190 if _has_poll:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1191 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	1192 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1193 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	1194
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1195 # 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	1196 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	1197 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	1198 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	1199 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	1200
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1201 # 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	1202 # 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	1203 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	1204 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	1205 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	1206 self.stdout.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1207 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	1208 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	1209 self.stderr.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1210
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1211 self.wait()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1212 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1213
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1214
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1215 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	1216 stdout = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1217 stderr = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1218 fd2file = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1219 fd2output = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1220
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1221 poller = select.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1222 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	1223 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	1224 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	1225
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1226 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	1227 poller.unregister(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1228 fd2file[fd].close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1229 fd2file.pop(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1230
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1231 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	1232 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	1233
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1234 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	1235 if self.stdout:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1236 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	1237 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	1238 if self.stderr:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1239 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	1240 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	1241
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1242 input_offset = 0
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1243 while fd2file:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1244 try:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1245 ready = poller.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1246 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	1247 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	1248 continue
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1249 raise
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1250
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1251 # 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	1252 # 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	1253
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1254 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	1255 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	1256 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	1257 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	1258 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	1259 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	1260 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	1261 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	1262 if not data:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1263 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	1264 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	1265 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1266 # 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	1267 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	1268
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1269 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1270
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1271
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1272 def _communicate_with_select(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1273 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1274 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1275 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1276 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1277
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1278 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	1279 write_set.append(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1280 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1281 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1282 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1283 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1284 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1285 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1286
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1287 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1288 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	1289 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	1290 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	1291 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	1292 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	1293 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	1294 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1295
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1296 # 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	1297 # 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	1298
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1299 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	1300 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	1301 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	1302 input_offset += bytes_written
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1303 if input_offset >= len(input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1304 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1305 write_set.remove(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1306
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1307 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1308 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	1309 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1310 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1311 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1312 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1313
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1314 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1315 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	1316 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1317 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1318 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1319 stderr.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1320
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1321 return (stdout, stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1322
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1323
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	1324 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	1325 """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	1326 """
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	1327 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	1328
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	1329 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	1330 """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	1331 """
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	1332 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	1333
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	1334 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	1335 """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	1336 """
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	1337 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	1338
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1339
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1340 def _demo_posix():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1341 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1342 # Example 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1343 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1344 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	1345 print("Process list:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1346 print(plist)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1347
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1348 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1349 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1350 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1351 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1352 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1353 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1354
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1355 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1356 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1357 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1358 print("Looking for 'hda'...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1359 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1360 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	1361 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1362
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1363 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1364 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1365 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1366 print()
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1367 print("Trying a weird file...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1368 try:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1369 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	1370 except OSError as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1371 if e.errno == errno.ENOENT:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1372 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	1373 print("Child traceback:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1374 print(e.child_traceback)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1375 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1376 print("Error", e.errno)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1377 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1378 print("Gosh. No error.", file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1379
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1380
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1381 def _demo_windows():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1382 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1383 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1384 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1385 print("Looking for 'PROMPT' in set output...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1386 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1387 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	1388 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1389
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1390 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1391 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1392 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1393 print("Executing calc...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1394 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1395 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1396
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1397
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1398 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1399 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1400 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1401 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1402 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 55179:e89faaafa3ee