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

annotate Lib/subprocess.py @ 46567:ffeecbebf3ca

Block 2.6-only doc change.

author	Georg Brandl <georg@python.org>
date	Sat, 26 Apr 2008 18:28:08 +0000
parents	63965327b3ef
children	0525cd5b2582

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 #
34624 5fde17b35472 Made the module compatible with Python 2.2 again. Peter Astrand <astrand@lysator.liu.se> parents: 34587 diff changeset	5 # This module should remain compatible with Python 2.2, see PEP 291.
5fde17b35472 Made the module compatible with Python 2.2 again. Peter Astrand <astrand@lysator.liu.se> parents: 34587 diff changeset	6 #
35633 45aaa436b945 Changed license header: Now simply referring to PSF. This closes bug Peter Astrand <astrand@lysator.liu.se> parents: 34818 diff changeset	7 # 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	8 #
34587 e9ec2ce340fd Added copyright notice: Peter Astrand <astrand@lysator.liu.se> parents: 34575 diff changeset	9 # 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	10 # 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	11
33776 c5d951a0e0c3 Fix docstring formatting of escape sequences. Raymond Hettinger <python@rcn.com> parents: 33770 diff changeset	12 r"""subprocess - Subprocesses with accessible I/O streams
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	13
33770 c6aac03474c5 return codes are available on all platforms, not just on Unix Fredrik Lundh <fredrik@pythonware.com> parents: 33751 diff changeset	14 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	15 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	16 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	17
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	18 os.system
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	19 os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	20 commands.*
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 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	23 modules and functions can be found below.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	24
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	27 Using the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	28 ===========================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	29 This module defines one class called Popen:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	30
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	31 class Popen(args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	32 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	33 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	34 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	35 startupinfo=None, creationflags=0):
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	38 Arguments are:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	39
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	40 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	41 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	42 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	43
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	44 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	45 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	46 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	47 as the only item (the program to execute).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	48
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	49 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	50 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	51 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	52 will be treated as additional shell arguments.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	53
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	54 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	55 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	56 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	57 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	58 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	59 rules as the MS C runtime.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	60
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	61 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	62 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	63 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	64 (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	65 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	66 bufsize is 0 (unbuffered).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	67
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	68 stdin, stdout and stderr specify the executed programs' standard
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	69 input, standard output and standard error file handles, respectively.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	70 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	71 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	72 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	73 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	74 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	75 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	76 file handle as for stdout.
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 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	79 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	80
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	81 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	82 closed before the child process is executed.
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 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	85 shell.
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 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	88 before the child is executed.
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 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	91 process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	92
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	93 If 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	94 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	95 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	96 '\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	97 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	98 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	99 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	100 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	101
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	102 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	103 underlying CreateProcess() function. They can specify things such as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	104 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	105 (Windows only)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	106
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	107
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	108 This module also defines two shortcut functions:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	109
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	110 call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	111 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	112 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	113
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	114 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	115
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	116 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	117
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	118 check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	119 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	120 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	121 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	122 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	123
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	124 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	125
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	126 check_call(["ls", "-l"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	127
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	128 Exceptions
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	129 ----------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	130 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	131 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	132 the exception object will have one extra attribute called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	133 'child_traceback', which is a string containing traceback information
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	134 from the childs point of view.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	135
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	136 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	137 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	138 should prepare for OSErrors.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	139
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	140 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	141
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	142 check_call() will raise CalledProcessError, if the called process
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	143 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	144
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	145
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	146 Security
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	147 --------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	148 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	149 /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	150 metacharacters, can safely be passed to child processes.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	151
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	152
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	153 Popen objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	154 =============
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	155 Instances of the Popen class have the following methods:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	156
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	157 poll()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	158 Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	159 attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	160
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	161 wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	162 Wait for child process to terminate. Returns returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	163
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	164 communicate(input=None)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	165 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	166 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	167 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	168 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	169 the child.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	170
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	171 communicate() returns a tuple (stdout, stderr).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	172
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	173 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	174 method if the data size is large or unlimited.
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 The following attributes are also available:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	177
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	178 stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	179 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	180 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	181
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	182 stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	183 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	184 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	185 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	186
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	187 stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	188 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	189 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	190 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	191
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	192 pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	193 The process ID of the child process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	194
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	195 returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	196 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	197 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	198 child was terminated by signal N (UNIX only).
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	201 Replacing older functions with the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	202 ====================================================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	203 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	204 for a.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	205
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	206 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	207 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	208 exception.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	209
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	210 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	211 imported with "from subprocess import *".
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	212
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	213
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	214 Replacing /bin/sh shell backquote
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	215 ---------------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	216 output=`mycmd myarg`
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 output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	219
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	220
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	221 Replacing shell pipe line
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 output=`dmesg \| grep hda`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	224 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	225 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	226 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	227 output = p2.communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	228
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	229
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	230 Replacing os.system()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	231 ---------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	232 sts = os.system("mycmd" + " myarg")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	233 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	234 p = Popen("mycmd" + " myarg", shell=True)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	235 pid, sts = os.waitpid(p.pid, 0)
33723 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 Note:
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 * 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	240
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	241 * 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	242 exitstatus.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	243
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	244 A more real-world example would look like this:
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 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	247 retcode = call("mycmd" + " myarg", shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	248 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	249 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	250 else:
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	251 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	252 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	253 print("Execution failed:", e, file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	254
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	255
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	256 Replacing os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	257 -------------------
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	258 P_NOWAIT example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	259
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	260 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	261 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	262 pid = Popen(["/bin/mycmd", "myarg"]).pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	263
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 P_WAIT example:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	266
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	267 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	268 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	269 retcode = call(["/bin/mycmd", "myarg"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	270
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	271
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	272 Vector example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	273
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	274 os.spawnvp(os.P_NOWAIT, path, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	275 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	276 Popen([path] + args[1:])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	277
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	278
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	279 Environment example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	280
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	281 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	282 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	283 Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	284 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	285
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	286 import sys
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	287 mswindows = (sys.platform == "win32")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	288
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	289 import io
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	290 import os
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	291 import traceback
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	292 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	293 import signal
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	294
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	295 # Exception classes used by this module.
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	296 class CalledProcessError(Exception):
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	297 """This exception is raised when a process run by check_call() returns
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	298 a non-zero exit status. The exit status will be stored in the
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	299 returncode attribute."""
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	300 def __init__(self, returncode, cmd):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	301 self.returncode = returncode
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	302 self.cmd = cmd
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	303 def __str__(self):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	304 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	305
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	306
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	307 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	308 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	309 import msvcrt
33751 aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	310 if 0: # <-- change this to use pywin32 instead of the _subprocess driver
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	311 import pywintypes
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	312 from win32api import GetStdHandle, STD_INPUT_HANDLE, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	313 STD_OUTPUT_HANDLE, STD_ERROR_HANDLE
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	314 from win32api import GetCurrentProcess, DuplicateHandle, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	315 GetModuleFileName, GetVersion
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	316 from win32con import DUPLICATE_SAME_ACCESS, SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	317 from win32pipe import CreatePipe
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	318 from win32process import CreateProcess, STARTUPINFO, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	319 GetExitCodeProcess, STARTF_USESTDHANDLES, \
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	320 STARTF_USESHOWWINDOW, CREATE_NEW_CONSOLE
46505 63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	321 from win32process import TerminateProcess
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	322 from win32event import WaitForSingleObject, INFINITE, WAIT_OBJECT_0
33751 aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	323 else:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	324 from _subprocess import *
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	325 class STARTUPINFO:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	326 dwFlags = 0
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	327 hStdInput = None
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	328 hStdOutput = None
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	329 hStdError = None
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	330 wShowWindow = 0
33751 aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	331 class pywintypes:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	332 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	333 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	334 import select
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	335 import errno
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	336 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	337 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	338
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	339 __all__ = ["Popen", "PIPE", "STDOUT", "call", "check_call", "CalledProcessError"]
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	340
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	341 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	342 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	343 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	344 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	345
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	346 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	347
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	348 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	349 for inst in _active[:]:
44160 9d152530910a Removed PyInt_GetMax and sys.maxint Christian Heimes <christian@cheimes.de> parents: 43777 diff changeset	350 res = inst.poll(_deadstate=sys.maxsize)
39646 ce23d86732b0 Fix another comparison between None and 0. Guido van Rossum <guido@python.org> parents: 39442 diff changeset	351 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	352 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	353 _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	354 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	355 # 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	356 # 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	357 pass
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	358
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	359 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	360 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	361
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	362
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	363 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	364 """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	365 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	366
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	367 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	368
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	369 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	370 """
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	371 return Popen(popenargs, *kwargs).wait()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	372
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	373
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	374 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	375 """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	376 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	377 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	378 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	379
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	380 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	381
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	382 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	383 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	384 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	385 cmd = kwargs.get("args")
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	386 if cmd is None:
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	387 cmd = popenargs[0]
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	388 if retcode:
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	389 raise CalledProcessError(retcode, cmd)
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	390 return retcode
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	391
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	392
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	393 def list2cmdline(seq):
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 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	396 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	397
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	398 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	399 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	400
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	401 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	402 interpreted as a single argument, regardless of white space
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	403 or pipe characters contained within. A quoted string can be
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	404 embedded in an argument.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	405
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	406 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	407 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	408
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	409 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	410 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	411
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	412 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	413 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	414 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	415 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	416 described in rule 3.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	417 """
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 # See
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	420 # http://msdn.microsoft.com/library/en-us/vccelng/htm/progs_12.asp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	421 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	422 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	423 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	424 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	425
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	426 # 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	427 if result:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	428 result.append(' ')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	429
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	430 needquote = (" " in arg) or ("\t" in arg) or ("\|" in arg) or not arg
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	431 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	432 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	433
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	434 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	435 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	436 # 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	437 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	438 elif c == '"':
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	439 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	440 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	441 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	442 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	443 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	444 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	445 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	446 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	447 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	448 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	449
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	450 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	451 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	452 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	453
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	454 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	455 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	456 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	457
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	458 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	459
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	460
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	461 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	462 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	463 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	464 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	465 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	466 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	467 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	468 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	469
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	470 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	471 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	472 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	473 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	474 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	475
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	476 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	477 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	478 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	479 "platforms")
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	480 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	481 stderr is not None):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	482 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	483 "platforms if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	484 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	485 # POSIX
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	486 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	487 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	488 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	489 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	490 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	491 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	492
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	493 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	494 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	495 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	496 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	497 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	498 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	499
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	500 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	501 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	502 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	503 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	504 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	505 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	506 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	507 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	508 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	509 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	510 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	511 # are file descriptors on both platforms. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	512 # 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	513 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	514
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	515 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	516 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	517 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	518
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	519 self._execute_child(args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	520 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	521 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	522 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	523 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	524 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	525
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	526 # On Windows, you cannot just redirect one or two handles: You
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	527 # either have to redirect all three or none. If the subprocess
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	528 # user has only redirected one or two handles, we are
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	529 # automatically creating PIPEs for the rest. We should close
41554 06145fbc7ab9 Merged revisions 53952-54987 via svnmerge from Guido van Rossum <guido@python.org> parents: 40893 diff changeset	530 # these after the process is started. See bug #1124861.
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	531 if mswindows:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	532 if stdin is None and p2cwrite is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	533 os.close(p2cwrite)
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	534 p2cwrite = None
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	535 if stdout is None and c2pread is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	536 os.close(c2pread)
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	537 c2pread = None
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	538 if stderr is None and errread is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	539 os.close(errread)
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	540 errread = None
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	541
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	542 if bufsize == 0:
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	543 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	544 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	545 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	546 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	547 self.stdin = io.TextIOWrapper(self.stdin)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	548 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	549 self.stdout = io.open(c2pread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	550 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	551 self.stdout = io.TextIOWrapper(self.stdout)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	552 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	553 self.stderr = io.open(errread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	554 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	555 self.stderr = io.TextIOWrapper(self.stderr)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	556
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	557
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	558 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	559 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	560 return data.decode(encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	561
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	562
41554 06145fbc7ab9 Merged revisions 53952-54987 via svnmerge from Guido van Rossum <guido@python.org> parents: 40893 diff changeset	563 def __del__(self, sys=sys):
37879 f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	564 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	565 # 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	566 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	567 # In case the child hasn't been waited on, check if it's done.
44160 9d152530910a Removed PyInt_GetMax and sys.maxint Christian Heimes <christian@cheimes.de> parents: 43777 diff changeset	568 self.poll(_deadstate=sys.maxsize)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	569 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	570 # 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	571 _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	572
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	573
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	574 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	575 """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	576 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	577 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	578 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	579 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	580
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	581 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	582
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	583 # 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	584 # 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	585 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	586 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	587 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	588 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	589 if input:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	590 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	591 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	592 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	593 stdout = self.stdout.read()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	594 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	595 stderr = self.stderr.read()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	596 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	597 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	598
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	599 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	600
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	601
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	602 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	603 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	604 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	605 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	606 def _get_handles(self, stdin, stdout, stderr):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	607 """Construct and return tupel with IO objects:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	608 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	609 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	610 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	611 return (None, None, None, None, None, None)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	612
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	613 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	614 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	615 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	616
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	617 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	618 p2cread = GetStdHandle(STD_INPUT_HANDLE)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	619 if p2cread is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	620 pass
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	621 elif stdin is None or stdin == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	622 p2cread, p2cwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	623 # Detach and turn into fd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	624 p2cwrite = p2cwrite.Detach()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	625 p2cwrite = msvcrt.open_osfhandle(p2cwrite, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	626 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	627 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	628 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	629 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	630 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	631 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	632
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	633 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	634 c2pwrite = GetStdHandle(STD_OUTPUT_HANDLE)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	635 if c2pwrite is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	636 pass
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	637 elif stdout is None or stdout == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	638 c2pread, c2pwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	639 # Detach and turn into fd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	640 c2pread = c2pread.Detach()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	641 c2pread = msvcrt.open_osfhandle(c2pread, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	642 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	643 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	644 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	645 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	646 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	647 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	648
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	649 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	650 errwrite = GetStdHandle(STD_ERROR_HANDLE)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	651 if errwrite is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	652 pass
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	653 elif stderr is None or stderr == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	654 errread, errwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	655 # Detach and turn into fd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	656 errread = errread.Detach()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	657 errread = msvcrt.open_osfhandle(errread, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	658 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	659 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	660 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	661 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	662 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	663 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	664 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	665 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	666
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	667 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	668 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	669 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	670
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	671
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	672 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	673 """Return a duplicate of handle, which is inheritable"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	674 return DuplicateHandle(GetCurrentProcess(), handle,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	675 GetCurrentProcess(), 0, 1,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	676 DUPLICATE_SAME_ACCESS)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	677
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	678
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	679 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	680 """Find and return absolut path to w9xpopen.exe"""
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	681 w9xpopen = os.path.join(os.path.dirname(GetModuleFileName(0)),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	682 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	683 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	684 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	685 # 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	686 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	687 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	688 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	689 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	690 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	691 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	692 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	693
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	694
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	695 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	696 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	697 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	698 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	699 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	700 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	701 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	702
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	703 if not isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	704 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	705
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	706 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	707 if startupinfo is None:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	708 startupinfo = STARTUPINFO()
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	709 if None not in (p2cread, c2pwrite, errwrite):
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	710 startupinfo.dwFlags \|= STARTF_USESTDHANDLES
66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	711 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	712 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	713 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	714
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	715 if shell:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	716 startupinfo.dwFlags \|= STARTF_USESHOWWINDOW
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	717 startupinfo.wShowWindow = SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	718 comspec = os.environ.get("COMSPEC", "cmd.exe")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	719 args = comspec + " /c " + args
40644 1c26505c1de6 Rip out 'long' and 'L'-suffixed integer literals. Guido van Rossum <guido@python.org> parents: 40643 diff changeset	720 if (GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	721 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	722 # 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	723 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	724 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	725 # (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	726 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	727 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	728 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	729 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	730 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	731 # use at xxx" and a hopeful warning about the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	732 # stability of your system. Cost is Ctrl+C wont
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	733 # kill children.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	734 creationflags \|= CREATE_NEW_CONSOLE
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	735
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	736 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	737 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	738 hp, ht, pid, tid = CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	739 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	740 None, None,
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	741 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	742 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	743 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	744 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	745 startupinfo)
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	746 except pywintypes.error as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	747 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	748 # a subclass of OSError. FIXME: We should really
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	749 # translate errno using _sys_errlist (or simliar), but
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	750 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	751 raise WindowsError(*e.args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	752
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	753 # 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	754 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	755 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	756 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	757 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	758
33727 0236b6530c46 Typo fix Andrew M. Kuchling <amk@amk.ca> parents: 33723 diff changeset	759 # Child is launched. Close the parent's copy of those pipe
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	760 # handles that only the child should have open. You need
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	761 # to make sure that no handles to the write end of the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	762 # output pipe are maintained in this process or else the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	763 # pipe will not close when the child process exits and the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	764 # ReadFile will hang.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	765 if p2cread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	766 p2cread.Close()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	767 if c2pwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	768 c2pwrite.Close()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	769 if errwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	770 errwrite.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	771
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	772
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	773 def poll(self, _deadstate=None):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	774 """Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	775 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	776 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	777 if WaitForSingleObject(self._handle, 0) == WAIT_OBJECT_0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	778 self.returncode = GetExitCodeProcess(self._handle)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	779 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	780
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	781
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	782 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	783 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	784 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	785 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	786 obj = WaitForSingleObject(self._handle, INFINITE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	787 self.returncode = GetExitCodeProcess(self._handle)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	788 return self.returncode
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 _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	792 buffer.append(fh.read())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	793
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	794
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	795 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	796 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	797 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	798
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	799 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	800 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	801 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	802 args=(self.stdout, stdout))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	803 stdout_thread.setDaemon(True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	804 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	805 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	806 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	807 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	808 args=(self.stderr, stderr))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	809 stderr_thread.setDaemon(True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	810 stderr_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	811
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	812 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	813 if input is not None:
43684 4bb6a0c353ab Patch # 1331 by Christian Heimes. Guido van Rossum <guido@python.org> parents: 43577 diff changeset	814 if isinstance(input, str):
4bb6a0c353ab Patch # 1331 by Christian Heimes. Guido van Rossum <guido@python.org> parents: 43577 diff changeset	815 input = input.encode()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	816 self.stdin.write(input)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	817 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	818
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	819 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	820 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	821 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	822 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	823
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	824 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	825 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	826 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	827 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	828 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	829
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	830 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	831 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	832
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	833 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	834 """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	835 """
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	836 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	837 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	838 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	839 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	840
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	841 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	842 """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	843 """
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	844 TerminateProcess(self._handle, 1)
63965327b3ef Merged revisions 62386-62387,62389-62393,62396,62400-62402,62407,62409-62410,62412-62414,62418-62419 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44810 diff changeset	845
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	846 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	847
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	848 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	849 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	850 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	851 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	852 def _get_handles(self, stdin, stdout, stderr):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	853 """Construct and return tupel with IO objects:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	854 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	855 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	856 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	857 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	858 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	859
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	860 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	861 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	862 elif stdin == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	863 p2cread, p2cwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	864 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	865 p2cread = stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	866 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	867 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	868 p2cread = stdin.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	869
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	870 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	871 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	872 elif stdout == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	873 c2pread, c2pwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	874 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	875 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	876 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	877 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	878 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	879
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	880 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	881 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	882 elif stderr == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	883 errread, errwrite = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	884 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	885 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	886 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	887 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	888 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	889 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	890 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	891
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	892 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	893 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	894 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	895
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	896
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	897 def _set_cloexec_flag(self, fd):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	898 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	899 cloexec_flag = fcntl.FD_CLOEXEC
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	900 except AttributeError:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	901 cloexec_flag = 1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	902
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	903 old = fcntl.fcntl(fd, fcntl.F_GETFD)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	904 fcntl.fcntl(fd, fcntl.F_SETFD, old \| cloexec_flag)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	905
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	906
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	907 def _close_fds(self, but):
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	908 os.closerange(3, but)
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	909 os.closerange(but + 1, MAXFD)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	910
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	911
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	912 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	913 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	914 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	915 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	916 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	917 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	918 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	919
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	920 if isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	921 args = [args]
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	922 else:
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	923 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	924
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	925 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	926 args = ["/bin/sh", "-c"] + args
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	927
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	928 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	929 executable = args[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	930
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	931 # For transferring possible exec failure from child to parent
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	932 # The first char specifies the exception type: 0 means
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	933 # OSError, 1 means some other error.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	934 errpipe_read, errpipe_write = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	935 self._set_cloexec_flag(errpipe_write)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	936
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	937 gc_was_enabled = gc.isenabled()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	938 # Disable gc to avoid bug where gc -> file_dealloc ->
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	939 # write to stderr -> hang. http://bugs.python.org/issue1336
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	940 gc.disable()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	941 try:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	942 self.pid = os.fork()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	943 except:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	944 if gc_was_enabled:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	945 gc.enable()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	946 raise
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	947 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	948 if self.pid == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	949 # Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	950 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	951 # Close parent's pipe ends
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	952 if p2cwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	953 os.close(p2cwrite)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	954 if c2pread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	955 os.close(c2pread)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	956 if errread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	957 os.close(errread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	958 os.close(errpipe_read)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	959
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	960 # Dup fds for child
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	961 if p2cread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	962 os.dup2(p2cread, 0)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	963 if c2pwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	964 os.dup2(c2pwrite, 1)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	965 if errwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	966 os.dup2(errwrite, 2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	967
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	968 # Close pipe fds. Make sure we don't close the same
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	969 # fd more than once, or standard fds.
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	970 if p2cread is not None and p2cread not in (0,):
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	971 os.close(p2cread)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	972 if c2pwrite is not None and c2pwrite not in (p2cread, 1):
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	973 os.close(c2pwrite)
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	974 if (errwrite is not None and
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	975 errwrite not in (p2cread, c2pwrite, 2)):
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	976 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	977
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	978 # Close all other fds, if asked for
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	979 if close_fds:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	980 self._close_fds(but=errpipe_write)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	981
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	982 if cwd is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	983 os.chdir(cwd)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	984
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	985 if preexec_fn:
37048 c048a09d06ff Remove apply() Neal Norwitz <nnorwitz@gmail.com> parents: 35633 diff changeset	986 preexec_fn()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	987
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	988 if env is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	989 os.execvp(executable, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	990 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	991 os.execvpe(executable, args, env)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	992
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	993 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	994 exc_type, exc_value, tb = sys.exc_info()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	995 # Save the traceback and attach it to the exception object
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	996 exc_lines = traceback.format_exception(exc_type,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	997 exc_value,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	998 tb)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	999 exc_value.child_traceback = ''.join(exc_lines)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1000 os.write(errpipe_write, pickle.dumps(exc_value))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1001
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1002 # This exitcode won't be reported to applications, so it
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003 # really doesn't matter what we return.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1004 os._exit(255)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1005
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1006 # Parent
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1007 if gc_was_enabled:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1008 gc.enable()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1009 os.close(errpipe_write)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1010 if p2cread is not None and p2cwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1011 os.close(p2cread)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1012 if c2pwrite is not None and c2pread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1013 os.close(c2pwrite)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1014 if errwrite is not None and errread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1015 os.close(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1016
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1017 # Wait for exec to fail or succeed; possibly raising exception
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1018 data = os.read(errpipe_read, 1048576) # Exceptions limited to 1 MB
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1019 os.close(errpipe_read)
41731 78d76435da9a Make test_sys pass. Guido van Rossum <guido@python.org> parents: 41699 diff changeset	1020 if data:
34303 cb30cfcb39e7 On UNIX, when the execution of the child fails, we must waitpid() to Peter Astrand <astrand@lysator.liu.se> parents: 34302 diff changeset	1021 os.waitpid(self.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1022 child_exception = pickle.loads(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 raise child_exception
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 _handle_exitstatus(self, sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1027 if os.WIFSIGNALED(sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1028 self.returncode = -os.WTERMSIG(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1029 elif os.WIFEXITED(sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1030 self.returncode = os.WEXITSTATUS(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1031 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1032 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1033 raise RuntimeError("Unknown child exit status!")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1034
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1035
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	1036 def poll(self, _deadstate=None):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1037 """Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1038 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1039 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1040 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1041 pid, sts = os.waitpid(self.pid, os.WNOHANG)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1042 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1043 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1044 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	1045 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	1046 self.returncode = _deadstate
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1047 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1048
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1049
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1050 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1051 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1052 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1053 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1054 pid, sts = os.waitpid(self.pid, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1055 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1056 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1057
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1058
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1059 def _communicate(self, input):
43487 8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1060 if self.stdin:
8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1061 if isinstance(input, str): # Unicode
8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1062 input = input.encode("utf-8") # XXX What else?
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1063 input = bytes(input)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1064 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1065 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1066 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1067 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1068
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1069 if self.stdin:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1070 # Flush stdio buffer. This might block, if the user has
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1071 # been writing to .stdin in an uncontrolled fashion.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1072 self.stdin.flush()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1073 if input:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1074 write_set.append(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1075 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1076 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1077 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1078 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1079 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1080 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1081 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1082 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1083
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1084 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1085 while read_set or write_set:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1086 rlist, wlist, xlist = select.select(read_set, write_set, [])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1087
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1088 # 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	1089 # 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	1090
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1091 if self.stdin in wlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1092 # When select has indicated that the file is writable,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1093 # we can write up to PIPE_BUF bytes without risk
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1094 # blocking. POSIX defines PIPE_BUF >= 512
43487 8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1095 chunk = input[input_offset : input_offset + 512]
8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1096 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	1097 input_offset += bytes_written
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1098 if input_offset >= len(input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1099 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1100 write_set.remove(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1101
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1102 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1103 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	1104 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1105 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1106 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1107 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1108
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1109 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1110 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	1111 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1112 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1113 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1114 stderr.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1115
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1116 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1117 if stdout is not None:
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1118 stdout = b"".join(stdout)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1119 if stderr is not None:
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1120 stderr = b"".join(stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1121
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1122 # Translate newlines, if requested.
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1123 # This also turns bytes into strings.
41732 bbb099d4ec80 Make test_subprocess pass. The subprocess module now reads and writes Guido van Rossum <guido@python.org> parents: 41731 diff changeset	1124 if self.universal_newlines:
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	1125 if stdout is not None:
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1126 stdout = self._translate_newlines(stdout,
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1127 self.stdout.encoding)
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	1128 if stderr is not None:
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1129 stderr = self._translate_newlines(stderr,
0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1130 self.stderr.encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1131
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1132 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1133 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1134
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	1135 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	1136 """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	1137 """
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	1138 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	1139
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	1140 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	1141 """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	1142 """
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	1143 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	1144
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	1145 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	1146 """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	1147 """
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	1148 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	1149
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1150
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1151 def _demo_posix():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1152 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1153 # Example 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1154 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1155 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	1156 print("Process list:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1157 print(plist)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1158
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 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1161 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1162 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1163 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1164 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1165
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1166 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1167 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1168 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1169 print("Looking for 'hda'...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1170 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1171 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	1172 print(repr(p2.communicate()[0]))
33723 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 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1175 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1176 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1177 print()
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1178 print("Trying a weird file...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1179 try:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1180 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	1181 except OSError as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1182 if e.errno == errno.ENOENT:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1183 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	1184 print("Child traceback:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1185 print(e.child_traceback)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1186 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1187 print("Error", e.errno)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1188 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1189 print("Gosh. No error.", file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1190
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1191
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1192 def _demo_windows():
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 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1195 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1196 print("Looking for 'PROMPT' in set output...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1197 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1198 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	1199 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1200
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1201 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1202 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1203 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1204 print("Executing calc...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1205 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1206 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1207
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1208
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1209 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1210 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1211 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1212 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1213 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 46567:ffeecbebf3ca