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

annotate Lib/subprocess.py @ 64166:d0e9febfa00a 3.1

Merged revisions 84172 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r84172 | martin.v.loewis | 2010-08-18 18:12:23 +0200 (Mi, 18 Aug 2010) | 2 lines Restore GIL in nis_cat in case of error. ........

author	Martin v. Löwis <martin@v.loewis.de>
date	Thu, 19 Aug 2010 09:03:03 +0000
parents	8499ae5d9719
children	a68f8763555b

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:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	347 from _subprocess import CREATE_NEW_CONSOLE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	348 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	349 import msvcrt
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	350 import _subprocess
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	351 class STARTUPINFO:
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	352 dwFlags = 0
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	353 hStdInput = None
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	354 hStdOutput = None
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	355 hStdError = None
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	356 wShowWindow = 0
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	357 class pywintypes:
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	358 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	359 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	360 import select
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	361 _has_poll = hasattr(select, 'poll')
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	362 import errno
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	363 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	364 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	365
55626 fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	366 # When select or poll has indicated that the file is writable,
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	367 # we can write up to _PIPE_BUF bytes without risk of blocking.
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	368 # POSIX defines PIPE_BUF as >= 512.
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	369 _PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	370
fb5857f903fe Merged revisions 73917 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 55617 diff changeset	371
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	372 __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	373 "getoutput", "check_output", "CalledProcessError"]
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	374
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	375 if mswindows:
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	376 __all__.append("CREATE_NEW_CONSOLE")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	377 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	378 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	379 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	380 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	381
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	382 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	383
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	384 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	385 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	386 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	387 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	388 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	389 _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	390 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	391 # 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	392 # 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	393 pass
33723 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 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	396 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	397
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	398
59209 1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	399 def _eintr_retry_call(func, *args):
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	400 while True:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	401 try:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	402 return func(*args)
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	403 except OSError as e:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	404 if e.errno == errno.EINTR:
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	405 continue
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	406 raise
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	407
1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	408
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	409 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	410 """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	411 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	412
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	413 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	414
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	415 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	416 """
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	417 return Popen(popenargs, *kwargs).wait()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	418
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	419
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	420 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	421 """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	422 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	423 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	424 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	425
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	426 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	427
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	428 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	429 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	430 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	431 if retcode:
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	432 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	433 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	434 cmd = popenargs[0]
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	435 raise CalledProcessError(retcode, cmd)
50074 024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	436 return 0
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	437
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 def check_output(popenargs, *kwargs):
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	440 """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	441
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	442 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	443 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	444 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	445
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	446 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	447
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	448 >>> 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	449 '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	450
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	451 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	452 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	453
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	454 >>> check_output(["/bin/sh", "-c",
51776 d06a3ebf306f Merged revisions 69846 via svnmerge from Mark Dickinson <dickinsm@gmail.com> parents: 51721 diff changeset	455 "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	456 stderr=subprocess.STDOUT)
51776 d06a3ebf306f Merged revisions 69846 via svnmerge from Mark Dickinson <dickinsm@gmail.com> parents: 51721 diff changeset	457 '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	458 """
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	459 if 'stdout' in kwargs:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	460 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	461 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	462 output, unused_err = process.communicate()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	463 retcode = process.poll()
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	464 if retcode:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	465 cmd = kwargs.get("args")
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	466 if cmd is None:
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	467 cmd = popenargs[0]
024a9897c651 Merged revisions 67511,67536-67537,67543 via svnmerge from Georg Brandl <georg@python.org> parents: 48752 diff changeset	468 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	469 return output
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	470
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	471
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	472 def list2cmdline(seq):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	473 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	474 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	475 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	476
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	477 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	478 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	479
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	480 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	481 interpreted as a single argument, regardless of white space
62404 5de52eb252da Merged revisions 82076 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61585 diff changeset	482 contained within. A quoted string can be embedded in an
5de52eb252da Merged revisions 82076 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61585 diff changeset	483 argument.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	484
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	485 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	486 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	487
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	488 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	489 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	490
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	491 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	492 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	493 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	494 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	495 described in rule 3.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	496 """
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 # See
57156 667d9779cad6 Merged revisions 76170 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55626 diff changeset	499 # http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
667d9779cad6 Merged revisions 76170 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55626 diff changeset	500 # or search http://msdn.microsoft.com for
667d9779cad6 Merged revisions 76170 via svnmerge from Eric Smith <eric@trueblade.com> parents: 55626 diff changeset	501 # "Parsing C++ Command-Line Arguments"
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	502 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	503 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	504 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	505 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	506
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	507 # 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	508 if result:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	509 result.append(' ')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	510
62404 5de52eb252da Merged revisions 82076 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61585 diff changeset	511 needquote = (" " in arg) or ("\t" in arg) or not arg
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	512 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	513 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	514
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	515 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	516 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	517 # 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	518 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	519 elif c == '"':
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	520 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	521 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	522 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	523 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	524 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	525 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	526 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	527 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	528 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	529 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	530
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	531 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	532 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	533 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	534
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	535 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	536 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	537 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	538
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	539 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	540
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	541
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	542 # 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	543 #
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	544 # 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	545
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	546 def getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	547 """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	548
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	549 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	550 (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	551 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	552 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	553 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	554
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	555 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	556 >>> 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	557 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	558 >>> 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	559 (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	560 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	561 (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	562 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	563 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	564 text = pipe.read()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	565 sts = pipe.close()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	566 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	567 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	568 return sts, text
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
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	571 def getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	572 """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	573
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	574 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	575 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	576
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	577 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	578 >>> 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	579 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	580 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	581 return getstatusoutput(cmd)[1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	582
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	583
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	584 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	585 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	586 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	587 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	588 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	589 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	590 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	591 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	592
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	593 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	594 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	595 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	596 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	597 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	598
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	599 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	600 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	601 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	602 "platforms")
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	603 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	604 stderr is not None):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	605 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	606 "platforms if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	607 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	608 # POSIX
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	609 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	610 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	611 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	612 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	613 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	614 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	615
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	616 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	617 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	618 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	619 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	620 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	621 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	622
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	623 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	624 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	625 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	626 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	627 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	628 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	629 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	630 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	631 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	632 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	633 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	634 # are file descriptors on both platforms. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	635 # 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	636 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	637
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	638 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	639 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	640 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	641
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	642 self._execute_child(args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	643 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	644 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	645 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	646 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	647 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	648
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	649 if mswindows:
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	650 if p2cwrite is not None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	651 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	652 if c2pread is not None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	653 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	654 if errread is not None:
d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	655 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	656
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	657 if bufsize == 0:
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	658 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	659 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	660 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	661 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	662 self.stdin = io.TextIOWrapper(self.stdin)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	663 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	664 self.stdout = io.open(c2pread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	665 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	666 self.stdout = io.TextIOWrapper(self.stdout)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	667 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	668 self.stderr = io.open(errread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	669 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	670 self.stderr = io.TextIOWrapper(self.stderr)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	671
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	672
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	673 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	674 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	675 return data.decode(encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	676
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	677
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	678 def __del__(self, _maxsize=sys.maxsize, _active=_active):
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	679 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	680 # 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	681 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	682 # In case the child hasn't been waited on, check if it's done.
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	683 self._internal_poll(_deadstate=_maxsize)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	684 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	685 # 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	686 _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	687
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	688
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	689 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	690 """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	691 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	692 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	693 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	694 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	695
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	696 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	697
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	698 # 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	699 # 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	700 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	701 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	702 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	703 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	704 if 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.write(input)
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	706 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	707 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	708 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	709 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	710 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	711 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	712 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	713 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	714 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	715
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	716 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	717
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	718
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	719 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	720 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	721
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	722
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	723 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	724 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	725 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	726 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	727 def _get_handles(self, stdin, stdout, stderr):
55617 a267c604465f Recorded merge of revisions 74057 via svnmerge from Georg Brandl <georg@python.org> parents: 55602 diff changeset	728 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	729 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	730 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	731 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	732 return (None, None, None, None, None, None)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	733
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	734 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	735 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	736 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	737
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	738 if stdin is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	739 p2cread = _subprocess.GetStdHandle(_subprocess.STD_INPUT_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	740 if p2cread is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	741 p2cread, _ = _subprocess.CreatePipe(None, 0)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	742 elif stdin == PIPE:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	743 p2cread, p2cwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	744 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	745 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	746 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	747 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	748 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	749 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	750
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	751 if stdout is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	752 c2pwrite = _subprocess.GetStdHandle(_subprocess.STD_OUTPUT_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	753 if c2pwrite is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	754 _, c2pwrite = _subprocess.CreatePipe(None, 0)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	755 elif stdout == PIPE:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	756 c2pread, c2pwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	757 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	758 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	759 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	760 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	761 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	762 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	763
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	764 if stderr is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	765 errwrite = _subprocess.GetStdHandle(_subprocess.STD_ERROR_HANDLE)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	766 if errwrite is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	767 _, errwrite = _subprocess.CreatePipe(None, 0)
51981 d77172eb6fe7 Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51776 diff changeset	768 elif stderr == PIPE:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	769 errread, errwrite = _subprocess.CreatePipe(None, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	770 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	771 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	772 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	773 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	774 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	775 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	776 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	777 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	778
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	779 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	780 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	781 errread, errwrite)
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	784 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	785 """Return a duplicate of handle, which is inheritable"""
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	786 return _subprocess.DuplicateHandle(_subprocess.GetCurrentProcess(),
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	787 handle, _subprocess.GetCurrentProcess(), 0, 1,
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	788 _subprocess.DUPLICATE_SAME_ACCESS)
33723 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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	791 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	792 """Find and return absolut path to w9xpopen.exe"""
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	793 w9xpopen = os.path.join(
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	794 os.path.dirname(_subprocess.GetModuleFileName(0)),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	795 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	796 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	797 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	798 # 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	799 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	800 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	801 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	802 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	803 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	804 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	805 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	806
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	807
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	808 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	809 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	810 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	811 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	812 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	813 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	814 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	815
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	816 if not isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	817 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	818
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	819 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	820 if startupinfo is None:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	821 startupinfo = STARTUPINFO()
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	822 if None not in (p2cread, c2pwrite, errwrite):
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	823 startupinfo.dwFlags \|= _subprocess.STARTF_USESTDHANDLES
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	824 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	825 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	826 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	827
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	828 if shell:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	829 startupinfo.dwFlags \|= _subprocess.STARTF_USESHOWWINDOW
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	830 startupinfo.wShowWindow = _subprocess.SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	831 comspec = os.environ.get("COMSPEC", "cmd.exe")
63930 8499ae5d9719 #2304: fix incorporating Eric Smith's .format suggestion and tested on Ubuntu as well as Windows Tim Golden <mail@timgolden.me.uk> parents: 63843 diff changeset	832 args = '{} /c "{}"'.format (comspec, args)
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	833 if (_subprocess.GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	834 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	835 # 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	836 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	837 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	838 # (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	839 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	840 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	841 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	842 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	843 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	844 # 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	845 # 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	846 # kill children.
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	847 creationflags \|= _subprocess.CREATE_NEW_CONSOLE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	848
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	849 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	850 try:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	851 hp, ht, pid, tid = _subprocess.CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	852 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	853 None, None,
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	854 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	855 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	856 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	857 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	858 startupinfo)
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	859 except pywintypes.error as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	860 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	861 # a subclass of OSError. FIXME: We should really
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	862 # translate errno using _sys_errlist (or simliar), but
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	863 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	864 raise WindowsError(*e.args)
63816 f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	865 finally:
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	866 # Child is launched. Close the parent's copy of those pipe
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	867 # handles that only the child should have open. You need
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	868 # to make sure that no handles to the write end of the
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	869 # output pipe are maintained in this process or else the
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	870 # pipe will not close when the child process exits and the
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	871 # ReadFile will hang.
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	872 if p2cread is not None:
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	873 p2cread.Close()
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	874 if c2pwrite is not None:
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	875 c2pwrite.Close()
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	876 if errwrite is not None:
f4d92c6d4d42 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63095 diff changeset	877 errwrite.Close()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	878
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	879 # 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	880 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	881 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	882 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	883 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	884
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	885 def _internal_poll(self, _deadstate=None,
61585 0e37a95cdcfb Merged revisions 81181 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61569 diff changeset	886 _WaitForSingleObject=_subprocess.WaitForSingleObject,
0e37a95cdcfb Merged revisions 81181 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61569 diff changeset	887 _WAIT_OBJECT_0=_subprocess.WAIT_OBJECT_0,
0e37a95cdcfb Merged revisions 81181 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61569 diff changeset	888 _GetExitCodeProcess=_subprocess.GetExitCodeProcess):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	889 """Check if child process has terminated. Returns returncode
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	890 attribute.
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	891
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	892 This method is called by __del__, so it can only refer to objects
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	893 in its local scope.
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	894
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	895 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	896 if self.returncode is None:
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	897 if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	898 self.returncode = _GetExitCodeProcess(self._handle)
33723 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 wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	903 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	904 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	905 if self.returncode is None:
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	906 _subprocess.WaitForSingleObject(self._handle,
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	907 _subprocess.INFINITE)
91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	908 self.returncode = _subprocess.GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	909 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	910
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	911
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	912 def _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	913 buffer.append(fh.read())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	914
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	915
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	916 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	917 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	918 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	919
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	920 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	921 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	922 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	923 args=(self.stdout, stdout))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	924 stdout_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	925 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	926 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	927 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	928 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	929 args=(self.stderr, stderr))
48752 8d88350553c3 fix set_daemon usage in subprocess Benjamin Peterson <benjamin@python.org> parents: 48680 diff changeset	930 stderr_thread.daemon = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	931 stderr_thread.start()
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 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	934 if input is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	935 self.stdin.write(input)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	936 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	937
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	938 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	939 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	940 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	941 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	942
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	943 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	944 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	945 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	946 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	947 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	948
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	949 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	950 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	951
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	952 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	953 """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	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 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	956 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	957 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	958 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	959
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	960 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	961 """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	962 """
60923 91f9168aadd0 Merged revisions 80441 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59209 diff changeset	963 _subprocess.TerminateProcess(self._handle, 1)
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	964
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	965 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	966
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	967 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	968 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	969 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	970 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	971 def _get_handles(self, stdin, stdout, stderr):
55617 a267c604465f Recorded merge of revisions 74057 via svnmerge from Georg Brandl <georg@python.org> parents: 55602 diff changeset	972 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	973 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	974 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	975 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	976 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	977 errread, errwrite = None, None
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 stdin 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 stdin == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	982 p2cread, p2cwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	983 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	984 p2cread = stdin
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	987 p2cread = stdin.fileno()
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 stdout 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 stdout == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	992 c2pread, c2pwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	993 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	994 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	995 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	996 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	997 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	998
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	999 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1000 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1001 elif stderr == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1002 errread, errwrite = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1004 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1005 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1006 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1007 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1008 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1009 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1010
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1011 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1012 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1013 errread, errwrite)
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 _set_cloexec_flag(self, fd):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1017 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1018 cloexec_flag = fcntl.FD_CLOEXEC
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1019 except AttributeError:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1020 cloexec_flag = 1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1021
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1022 old = fcntl.fcntl(fd, fcntl.F_GETFD)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 fcntl.fcntl(fd, fcntl.F_SETFD, old \| cloexec_flag)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1024
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1025
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1026 def _close_fds(self, but):
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1027 os.closerange(3, but)
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1028 os.closerange(but + 1, MAXFD)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1029
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1030
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1031 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	1032 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1033 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1034 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1035 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1036 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1037 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1038
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	1039 if isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1040 args = [args]
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1041 else:
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1042 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1043
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1044 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1045 args = ["/bin/sh", "-c"] + args
63095 ad66eff9800b Merged revisions 82971 via svnmerge from Stefan Krah <stefan@bytereef.org> parents: 62404 diff changeset	1046 if executable:
ad66eff9800b Merged revisions 82971 via svnmerge from Stefan Krah <stefan@bytereef.org> parents: 62404 diff changeset	1047 args[0] = executable
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1048
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1049 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1050 executable = args[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1051
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1052 # For transferring possible exec failure from child to parent
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1053 # The first char specifies the exception type: 0 means
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1054 # OSError, 1 means some other error.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1055 errpipe_read, errpipe_write = os.pipe()
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1056 try:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1057 try:
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1058 self._set_cloexec_flag(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1059
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1060 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	1061 # 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	1062 # 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	1063 gc.disable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1064 try:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1065 self.pid = os.fork()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1066 except:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1067 if gc_was_enabled:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1068 gc.enable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1069 raise
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1070 self._child_created = True
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1071 if self.pid == 0:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1072 # Child
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1073 try:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1074 # 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	1075 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	1076 os.close(p2cwrite)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1077 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	1078 os.close(c2pread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1079 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	1080 os.close(errread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1081 os.close(errpipe_read)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1082
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1083 # Dup fds for child
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1084 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	1085 os.dup2(p2cread, 0)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1086 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	1087 os.dup2(c2pwrite, 1)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1088 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	1089 os.dup2(errwrite, 2)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1090
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1091 # 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	1092 # 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	1093 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	1094 os.close(p2cread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1095 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	1096 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	1097 os.close(c2pwrite)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1098 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	1099 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	1100 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1101
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1102 # 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	1103 if close_fds:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1104 self._close_fds(but=errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1105
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1106 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	1107 os.chdir(cwd)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1108
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1109 if preexec_fn:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1110 preexec_fn()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1111
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1112 if env is None:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1113 os.execvp(executable, args)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1114 else:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1115 os.execvpe(executable, args, env)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1116
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1117 except:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1118 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	1119 # 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	1120 # object
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1121 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	1122 exc_value,
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1123 tb)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1124 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	1125 os.write(errpipe_write, pickle.dumps(exc_value))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1126
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1127 # 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	1128 # 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	1129 os._exit(255)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1130
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1131 # Parent
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1132 if gc_was_enabled:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1133 gc.enable()
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1134 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1135 # 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	1136 os.close(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1137
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1138 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	1139 os.close(p2cread)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1140 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	1141 os.close(c2pwrite)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1142 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	1143 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1144
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1145 # 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	1146 # exception (limited to 1 MB)
59209 1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	1147 data = _eintr_retry_call(os.read, errpipe_read, 1048576)
54797 5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1148 finally:
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1149 # 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	1150 os.close(errpipe_read)
5fafcb32f062 Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51981 diff changeset	1151
41731 78d76435da9a Make test_sys pass. Guido van Rossum <guido@python.org> parents: 41699 diff changeset	1152 if data:
59209 1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	1153 _eintr_retry_call(os.waitpid, self.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1154 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	1155 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	1156 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	1157 os.close(fd)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1158 raise child_exception
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1159
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1160
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1161 def _handle_exitstatus(self, sts, _WIFSIGNALED=os.WIFSIGNALED,
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1162 _WTERMSIG=os.WTERMSIG, _WIFEXITED=os.WIFEXITED,
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1163 _WEXITSTATUS=os.WEXITSTATUS):
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1164 # This method is called (indirectly) by __del__, so it cannot
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1165 # refer to anything outside of its local scope."""
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1166 if _WIFSIGNALED(sts):
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1167 self.returncode = -_WTERMSIG(sts)
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1168 elif _WIFEXITED(sts):
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1169 self.returncode = _WEXITSTATUS(sts)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1170 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1171 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1172 raise RuntimeError("Unknown child exit status!")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1173
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1174
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1175 def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1176 _WNOHANG=os.WNOHANG, _os_error=os.error):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1177 """Check if child process has terminated. Returns returncode
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1178 attribute.
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1179
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1180 This method is called by __del__, so it cannot reference anything
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1181 outside of the local scope (nor can any methods it calls).
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1182
58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1183 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1184 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1185 try:
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1186 pid, sts = _waitpid(self.pid, _WNOHANG)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1187 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1188 self._handle_exitstatus(sts)
61569 58a56aba0eb2 Backport r81155. Brett Cannon <bcannon@gmail.com> parents: 60923 diff changeset	1189 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	1190 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	1191 self.returncode = _deadstate
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1192 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1193
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1194
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1195 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1196 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1197 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1198 if self.returncode is None:
59209 1f158238fa76 Merged revisions 78524 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57156 diff changeset	1199 pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1200 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1201 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1202
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1203
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1204 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	1205 if self.stdin:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1206 # 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	1207 # 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	1208 self.stdin.flush()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1209 if not input:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1210 self.stdin.close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1211
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1212 if _has_poll:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1213 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	1214 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1215 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	1216
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1217 # 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	1218 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	1219 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	1220 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	1221 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	1222
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1223 # 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	1224 # 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	1225 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	1226 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	1227 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	1228 self.stdout.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1229 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	1230 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	1231 self.stderr.encoding)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1232
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1233 self.wait()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1234 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1235
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1236
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1237 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	1238 stdout = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1239 stderr = None # Return
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1240 fd2file = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1241 fd2output = {}
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1242
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1243 poller = select.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1244 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	1245 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	1246 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	1247
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1248 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	1249 poller.unregister(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1250 fd2file[fd].close()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1251 fd2file.pop(fd)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1252
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1253 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	1254 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	1255
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1256 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	1257 if self.stdout:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1258 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	1259 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	1260 if self.stderr:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1261 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	1262 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	1263
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1264 input_offset = 0
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1265 while fd2file:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1266 try:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1267 ready = poller.poll()
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1268 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	1269 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	1270 continue
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1271 raise
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1272
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1273 # 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	1274 # 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	1275
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1276 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	1277 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	1278 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	1279 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	1280 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	1281 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	1282 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	1283 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	1284 if not data:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1285 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	1286 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	1287 else:
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1288 # 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	1289 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	1290
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1291 return (stdout, stderr)
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1292
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1293
680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1294 def _communicate_with_select(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1295 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1296 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1297 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1298 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1299
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1300 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	1301 write_set.append(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1302 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1303 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1304 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1305 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1306 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1307 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1308
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1309 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1310 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	1311 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	1312 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	1313 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	1314 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	1315 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	1316 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1317
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1318 # 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	1319 # 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	1320
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1321 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	1322 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	1323 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	1324 input_offset += bytes_written
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1325 if input_offset >= len(input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1326 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1327 write_set.remove(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1328
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1329 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1330 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	1331 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1332 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1333 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1334 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1335
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1336 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1337 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	1338 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1339 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1340 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1341 stderr.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1342
55602 680ad8eed33b Merged revisions 73833,73838,73850-73852,73856-73857 via svnmerge from Georg Brandl <georg@python.org> parents: 54797 diff changeset	1343 return (stdout, stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1344
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1345
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	1346 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	1347 """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	1348 """
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	1349 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	1350
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	1351 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	1352 """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	1353 """
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	1354 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	1355
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	1356 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	1357 """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	1358 """
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	1359 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	1360
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1361
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1362 def _demo_posix():
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 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1365 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1366 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	1367 print("Process list:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1368 print(plist)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1369
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1370 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1371 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1372 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1373 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1374 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1375 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1376
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1377 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1378 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1379 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1380 print("Looking for 'hda'...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1381 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1382 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	1383 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1384
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1385 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1386 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1387 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1388 print()
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1389 print("Trying a weird file...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1390 try:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1391 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	1392 except OSError as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1393 if e.errno == errno.ENOENT:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1394 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	1395 print("Child traceback:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1396 print(e.child_traceback)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1397 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1398 print("Error", e.errno)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1399 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1400 print("Gosh. No error.", file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1401
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1402
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1403 def _demo_windows():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1404 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1405 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1406 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1407 print("Looking for 'PROMPT' in set output...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1408 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1409 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	1410 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1411
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1412 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1413 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1414 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1415 print("Executing calc...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1416 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1417 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1418
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1419
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1420 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1421 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1422 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1423 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1424 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 64166:d0e9febfa00a 3.1