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

annotate Lib/subprocess.py @ 48715:48dddfd2fbf3

RPC_WSTR is not available Visual Studio 2003 or earlier. (Maybe I should have defined RPC_WSTR on old compiler, but uuidcreate() is only place using it, so I simply replaced with unsigned short *)

author	Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp>
date	Sun, 17 Aug 2008 07:26:26 +0000
parents	7779af388aec
children	8d88350553c3

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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	21 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	22 modules and functions can be found below.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	23
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	24
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 Using the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	27 ===========================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	28 This module defines one class called Popen:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	29
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	30 class Popen(args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	31 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	32 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	33 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	34 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	35
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	36
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	37 Arguments are:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	38
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	39 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	40 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	41 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	42
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	43 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	44 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	45 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	46 as the only item (the program to execute).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	47
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	48 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	49 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	50 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	51 will be treated as additional shell arguments.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	52
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	53 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	54 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	55 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	56 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	57 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	58 rules as the MS C runtime.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	59
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	60 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	61 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	62 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	63 (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	64 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	65 bufsize is 0 (unbuffered).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	66
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	67 stdin, stdout and stderr specify the executed programs' standard
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	68 input, standard output and standard error file handles, respectively.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	69 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	70 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	71 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	72 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	73 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	74 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	75 file handle as for stdout.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	76
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	77 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	78 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	79
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	80 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	81 closed before the child process is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	82
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	83 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	84 shell.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	85
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	86 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	87 before the child is executed.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	88
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	89 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	90 process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	91
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	92 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	93 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	94 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	95 '\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	96 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	97 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	98 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	99 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	100
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	101 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	102 underlying CreateProcess() function. They can specify things such as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	103 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	104 (Windows only)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	105
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	106
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	107 This module also defines four shortcut functions:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	108
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	109 call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	110 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	111 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	112
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	113 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	114
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	115 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	116
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	117 check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	118 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	119 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	120 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	121 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	122
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	123 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	124
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	125 check_call(["ls", "-l"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	126
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	127 getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	128 Return (status, output) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	129
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	130 Execute the string 'cmd' in a shell with os.popen() and return a 2-tuple
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	131 (status, output). cmd is actually run as '{ cmd ; } 2>&1', so that the
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	132 returned output will contain output or error messages. A trailing newline
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	133 is stripped from the output. The exit status for the command can be
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	134 interpreted according to the rules for the C function wait(). Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	135
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	136 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	137 >>> subprocess.getstatusoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	138 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	139 >>> subprocess.getstatusoutput('cat /bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	140 (256, 'cat: /bin/junk: No such file or directory')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	141 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	142 (256, 'sh: /bin/junk: not found')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	143
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	144 getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	145 Return output (stdout or stderr) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	146
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	147 Like getstatusoutput(), except the exit status is ignored and the return
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	148 value is a string containing the command's output. Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	149
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	150 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	151 >>> subprocess.getoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	152 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	153
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	154
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	155 Exceptions
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 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	158 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	159 the exception object will have one extra attribute called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	160 'child_traceback', which is a string containing traceback information
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	161 from the childs point of view.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	162
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	163 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	164 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	165 should prepare for OSErrors.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	166
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	167 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	168
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	169 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	170 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	171
33723 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 Security
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	174 --------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	175 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	176 /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	177 metacharacters, can safely be passed to child processes.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	178
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	179
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	180 Popen objects
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 Instances of the Popen class have the following methods:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	183
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	184 poll()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	185 Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	186 attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	187
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	188 wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	189 Wait for child process to terminate. Returns returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	190
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	191 communicate(input=None)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	192 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	193 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	194 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	195 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	196 the child.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	197
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	198 communicate() returns a tuple (stdout, stderr).
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 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	201 method if the data size is large or unlimited.
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 The following attributes are also available:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	204
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	205 stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	206 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	207 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	208
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	209 stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	210 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	211 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	212 None.
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 stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	215 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	216 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	217 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	218
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	219 pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	220 The process ID of the child process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	221
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	222 returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	223 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	224 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	225 child was terminated by signal N (UNIX only).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	226
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	227
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	228 Replacing older functions with the subprocess module
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 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	231 for a.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	232
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	233 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	234 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	235 exception.
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 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	238 imported with "from subprocess import *".
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	239
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 Replacing /bin/sh shell backquote
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	242 ---------------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	243 output=`mycmd myarg`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	244 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	245 output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	246
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	247
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	248 Replacing shell pipe line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	249 -------------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	250 output=`dmesg \| grep hda`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	251 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	252 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	253 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	254 output = p2.communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	255
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	257 Replacing os.system()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	258 ---------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	259 sts = os.system("mycmd" + " myarg")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	260 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	261 p = Popen("mycmd" + " myarg", shell=True)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	262 pid, sts = os.waitpid(p.pid, 0)
33723 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 Note:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	265
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	266 * 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	267
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	268 * 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	269 exitstatus.
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 A more real-world example would look like this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	272
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	273 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	274 retcode = call("mycmd" + " myarg", shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	275 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	276 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	277 else:
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	278 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	279 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	280 print("Execution failed:", e, file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	281
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	282
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	283 Replacing os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	284 -------------------
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	285 P_NOWAIT example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	286
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	287 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	288 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	289 pid = Popen(["/bin/mycmd", "myarg"]).pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	290
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	291
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	292 P_WAIT example:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	293
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	294 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	295 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	296 retcode = call(["/bin/mycmd", "myarg"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	297
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	298
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	299 Vector example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	300
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	301 os.spawnvp(os.P_NOWAIT, path, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	302 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	303 Popen([path] + args[1:])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	304
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	305
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	306 Environment example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	307
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	308 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	309 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	310 Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	311 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	312
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	313 import sys
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	314 mswindows = (sys.platform == "win32")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	315
41845 9ce8fa0a0899 Make test_subprocess work. Fix universal newlines in io.py. Guido van Rossum <guido@python.org> parents: 41843 diff changeset	316 import io
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	317 import os
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	318 import traceback
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	319 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	320 import signal
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	321
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	322 # Exception classes used by this module.
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	323 class CalledProcessError(Exception):
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	324 """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	325 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	326 returncode attribute."""
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	327 def __init__(self, returncode, cmd):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	328 self.returncode = returncode
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	329 self.cmd = cmd
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	330 def __str__(self):
654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	331 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	332
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	333
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	334 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	335 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	336 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	337 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	338 import pywintypes
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	339 from win32api import GetStdHandle, STD_INPUT_HANDLE, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	340 STD_OUTPUT_HANDLE, STD_ERROR_HANDLE
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	341 from win32api import GetCurrentProcess, DuplicateHandle, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	342 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	343 from win32con import DUPLICATE_SAME_ACCESS, SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	344 from win32pipe import CreatePipe
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	345 from win32process import CreateProcess, STARTUPINFO, \
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	346 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	347 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	348 from win32process import TerminateProcess
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	349 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	350 else:
aa2d6060495a Replace dynamic try/except with "if 0", to keep py2exe happy. If you Fredrik Lundh <fredrik@pythonware.com> parents: 33735 diff changeset	351 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	352 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	353 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	354 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	355 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	356 hStdError = None
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	357 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	358 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	359 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	360 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	361 import select
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	362 import errno
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	363 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	364 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	365
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	366 __all__ = ["Popen", "PIPE", "STDOUT", "call", "check_call", "getstatusoutput",
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	367 "getoutput", "CalledProcessError"]
33723 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 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	370 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	371 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	372 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	373
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	374 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	375
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	376 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	377 for inst in _active[:]:
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	378 res = inst._internal_poll(_deadstate=sys.maxsize)
39646 ce23d86732b0 Fix another comparison between None and 0. Guido van Rossum <guido@python.org> parents: 39442 diff changeset	379 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	380 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	381 _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	382 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	383 # 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	384 # 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	385 pass
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	386
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	387 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	388 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	389
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	390
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	391 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	392 """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	393 return the returncode attribute.
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 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	396
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	397 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	398 """
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	399 return Popen(popenargs, *kwargs).wait()
33723 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
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	402 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	403 """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	404 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	405 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	406 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	407
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	408 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	409
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	410 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	411 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	412 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	413 cmd = kwargs.get("args")
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	414 if cmd is None:
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	415 cmd = popenargs[0]
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	416 if retcode:
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	417 raise CalledProcessError(retcode, cmd)
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	418 return retcode
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	419
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	420
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	421 def list2cmdline(seq):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	422 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	423 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	424 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	425
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	426 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	427 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	428
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	429 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	430 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	431 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	432 embedded in an argument.
33723 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 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	435 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	436
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	437 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	438 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	439
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	440 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	441 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	442 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	443 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	444 described in rule 3.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	445 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	446
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	447 # See
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	448 # 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	449 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	450 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	451 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	452 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 # 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	455 if result:
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
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	458 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	459 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	460 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	461
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	462 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	463 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	464 # 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	465 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	466 elif c == '"':
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	467 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	468 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	469 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	470 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	471 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	472 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	473 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	474 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	475 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	476 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	477
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	478 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	479 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	480 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	481
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	482 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	483 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	484 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	485
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	486 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	487
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	488
47331 0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	489 # Various tools for executing commands and looking at their output and status.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	490 #
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	491 # NB This only works (and is only relevant) for UNIX.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	492
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	493 def getstatusoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	494 """Return (status, output) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	495
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	496 Execute the string 'cmd' in a shell with os.popen() and return a 2-tuple
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	497 (status, output). cmd is actually run as '{ cmd ; } 2>&1', so that the
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	498 returned output will contain output or error messages. A trailing newline
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	499 is stripped from the output. The exit status for the command can be
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	500 interpreted according to the rules for the C function wait(). Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	501
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	502 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	503 >>> subprocess.getstatusoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	504 (0, '/bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	505 >>> subprocess.getstatusoutput('cat /bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	506 (256, 'cat: /bin/junk: No such file or directory')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	507 >>> subprocess.getstatusoutput('/bin/junk')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	508 (256, 'sh: /bin/junk: not found')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	509 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	510 pipe = os.popen('{ ' + cmd + '; } 2>&1', 'r')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	511 text = pipe.read()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	512 sts = pipe.close()
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	513 if sts is None: sts = 0
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	514 if text[-1:] == '\n': text = text[:-1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	515 return sts, text
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	516
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	517
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	518 def getoutput(cmd):
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	519 """Return output (stdout or stderr) of executing cmd in a shell.
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	520
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	521 Like getstatusoutput(), except the exit status is ignored and the return
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	522 value is a string containing the command's output. Example:
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	523
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	524 >>> import subprocess
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	525 >>> subprocess.getoutput('ls /bin/ls')
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	526 '/bin/ls'
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	527 """
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	528 return getstatusoutput(cmd)[1]
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	529
0525cd5b2582 The commands module has been removed. The getoutput() and getstatusoutput() Brett Cannon <bcannon@gmail.com> parents: 46505 diff changeset	530
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	531 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	532 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	533 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	534 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	535 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	536 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	537 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	538 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	539
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	540 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	541 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	542 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	543 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	544 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	545
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	546 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	547 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	548 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	549 "platforms")
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	550 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	551 stderr is not None):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	552 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	553 "platforms if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	554 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	555 # POSIX
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	556 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	557 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	558 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	559 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	560 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	561 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	562
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	563 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	564 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	565 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	566 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	567 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	568 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	569
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	570 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	571 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	572 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	573 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	574 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	575 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	576 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	577 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	578 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	579 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	580 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	581 # are file descriptors on both platforms. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	582 # 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	583 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	584
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	585 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	586 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	587 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	588
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	589 self._execute_child(args, executable, preexec_fn, close_fds,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	590 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	591 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	592 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	593 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	594 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	595
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	596 # 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	597 # 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	598 # 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	599 # 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	600 # 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	601 if mswindows:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	602 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	603 os.close(p2cwrite)
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	604 p2cwrite = None
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	605 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	606 os.close(c2pread)
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	607 c2pread = None
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	608 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	609 os.close(errread)
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	610 errread = None
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	611
41843 1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	612 if bufsize == 0:
1f7891d84d93 Remove native popen() and fdopen(), replacing them with subprocess calls. Guido van Rossum <guido@python.org> parents: 41732 diff changeset	613 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	614 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	615 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	616 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	617 self.stdin = io.TextIOWrapper(self.stdin)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	618 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	619 self.stdout = io.open(c2pread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	620 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	621 self.stdout = io.TextIOWrapper(self.stdout)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	622 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	623 self.stderr = io.open(errread, 'rb', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	624 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	625 self.stderr = io.TextIOWrapper(self.stderr)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	626
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	627
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	628 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	629 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	630 return data.decode(encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	631
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	632
41554 06145fbc7ab9 Merged revisions 53952-54987 via svnmerge from Guido van Rossum <guido@python.org> parents: 40893 diff changeset	633 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	634 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	635 # 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	636 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	637 # In case the child hasn't been waited on, check if it's done.
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	638 self._internal_poll(_deadstate=sys.maxsize)
39442 654c380cf8b9 Merged revisions 46753-51188 via svnmerge from Thomas Wouters <thomas@python.org> parents: 38673 diff changeset	639 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	640 # 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	641 _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	642
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair Thomas Wouters <thomas@python.org> parents: 37048 diff changeset	643
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	644 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	645 """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	646 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	647 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	648 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	649 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	650
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	651 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	652
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	653 # 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	654 # 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	655 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	656 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	657 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	658 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	659 if input:
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	660 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	661 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	662 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	663 stdout = self.stdout.read()
47557 98827a21e352 Merged revisions 63724,63726,63732,63744,63754-63755,63757-63758,63760,63775,63781-63782,63787,63805-63808,63818-63819,63823-63824 via svnmerge from Georg Brandl <georg@python.org> parents: 47331 diff changeset	664 self.stdout.close()
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	665 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	666 stderr = self.stderr.read()
47557 98827a21e352 Merged revisions 63724,63726,63732,63744,63754-63755,63757-63758,63760,63775,63781-63782,63787,63805-63808,63818-63819,63823-63824 via svnmerge from Georg Brandl <georg@python.org> parents: 47331 diff changeset	667 self.stderr.close()
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	668 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	669 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	670
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	671 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	672
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	673
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	674 def poll(self):
7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	675 return self._internal_poll()
7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	676
7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	677
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	678 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	679 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	680 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	681 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	682 def _get_handles(self, stdin, stdout, stderr):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	683 """Construct and return tupel with IO objects:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	684 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	685 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	686 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	687 return (None, None, None, None, None, None)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	688
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	689 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	690 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	691 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	692
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	693 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	694 p2cread = GetStdHandle(STD_INPUT_HANDLE)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	695 if p2cread is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	696 pass
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	697 elif stdin is None or stdin == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	698 p2cread, p2cwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	699 # Detach and turn into fd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	700 p2cwrite = p2cwrite.Detach()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	701 p2cwrite = msvcrt.open_osfhandle(p2cwrite, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	702 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	703 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	704 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	705 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	706 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	707 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	708
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	709 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	710 c2pwrite = GetStdHandle(STD_OUTPUT_HANDLE)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	711 if c2pwrite is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	712 pass
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	713 elif stdout is None or stdout == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	714 c2pread, c2pwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	715 # Detach and turn into fd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	716 c2pread = c2pread.Detach()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	717 c2pread = msvcrt.open_osfhandle(c2pread, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	718 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	719 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	720 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	721 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	722 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	723 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	724
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	725 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	726 errwrite = GetStdHandle(STD_ERROR_HANDLE)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	727 if errwrite is not None:
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	728 pass
32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	729 elif stderr is None or stderr == PIPE:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	730 errread, errwrite = CreatePipe(None, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	731 # Detach and turn into fd
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	732 errread = errread.Detach()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	733 errread = msvcrt.open_osfhandle(errread, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	734 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	735 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	736 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	737 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	738 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	739 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	740 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	741 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	742
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	743 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	744 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	745 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	746
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	747
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	748 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	749 """Return a duplicate of handle, which is inheritable"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	750 return DuplicateHandle(GetCurrentProcess(), handle,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	751 GetCurrentProcess(), 0, 1,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	752 DUPLICATE_SAME_ACCESS)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	753
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	754
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	755 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	756 """Find and return absolut path to w9xpopen.exe"""
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	757 w9xpopen = os.path.join(os.path.dirname(GetModuleFileName(0)),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	758 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	759 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	760 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	761 # 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	762 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	763 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	764 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	765 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	766 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	767 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	768 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	769
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	770
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	771 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	772 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	773 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	774 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	775 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	776 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	777 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	778
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	779 if not isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	780 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	781
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	782 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	783 if startupinfo is None:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	784 startupinfo = STARTUPINFO()
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	785 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	786 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	787 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	788 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	789 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	790
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	791 if shell:
38673 a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	792 startupinfo.dwFlags \|= STARTF_USESHOWWINDOW
a19c20c5e5c7 Merge the rest of the trunk. Thomas Wouters <thomas@python.org> parents: 38453 diff changeset	793 startupinfo.wShowWindow = SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	794 comspec = os.environ.get("COMSPEC", "cmd.exe")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	795 args = comspec + " /c " + args
40644 1c26505c1de6 Rip out 'long' and 'L'-suffixed integer literals. Guido van Rossum <guido@python.org> parents: 40643 diff changeset	796 if (GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	797 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	798 # 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	799 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	800 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	801 # (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	802 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	803 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	804 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	805 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	806 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	807 # use at xxx" and a hopeful warning about the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	808 # stability of your system. Cost is Ctrl+C wont
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	809 # kill children.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	810 creationflags \|= CREATE_NEW_CONSOLE
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 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	813 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	814 hp, ht, pid, tid = CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	815 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	816 None, None,
41969 9d02a4adf574 Merged revisions 55631-55794 via svnmerge from Guido van Rossum <guido@python.org> parents: 41845 diff changeset	817 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	818 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	819 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	820 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	821 startupinfo)
40587 6b18a095c2e7 SF patch 1631942 by Collin Winter: Guido van Rossum <guido@python.org> parents: 40582 diff changeset	822 except pywintypes.error as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	823 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	824 # a subclass of OSError. FIXME: We should really
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	825 # translate errno using _sys_errlist (or simliar), but
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	826 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	827 raise WindowsError(*e.args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	828
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	829 # 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	830 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	831 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	832 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	833 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	834
33727 0236b6530c46 Typo fix Andrew M. Kuchling <amk@amk.ca> parents: 33723 diff changeset	835 # 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	836 # 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	837 # 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	838 # 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	839 # 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	840 # ReadFile will hang.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	841 if p2cread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	842 p2cread.Close()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	843 if c2pwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	844 c2pwrite.Close()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	845 if errwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	846 errwrite.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	847
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	848
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	849 def _internal_poll(self, _deadstate=None):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	850 """Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	851 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	852 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	853 if WaitForSingleObject(self._handle, 0) == WAIT_OBJECT_0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	854 self.returncode = GetExitCodeProcess(self._handle)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	855 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	856
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	857
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	858 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	859 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	860 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	861 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	862 obj = WaitForSingleObject(self._handle, INFINITE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	863 self.returncode = GetExitCodeProcess(self._handle)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	864 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	865
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	866
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	867 def _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	868 buffer.append(fh.read())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	869
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	870
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	871 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	872 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	873 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	874
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	875 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	876 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	877 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	878 args=(self.stdout, stdout))
47668 9c79ee49a2d9 fix more threading API usage Benjamin Peterson <benjamin@python.org> parents: 47557 diff changeset	879 stdout_thread.set_daemon(True)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	880 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	881 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	882 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	883 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	884 args=(self.stderr, stderr))
47668 9c79ee49a2d9 fix more threading API usage Benjamin Peterson <benjamin@python.org> parents: 47557 diff changeset	885 stderr_thread.set_daemon(True)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	886 stderr_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	887
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	888 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	889 if input is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	890 self.stdin.write(input)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	891 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	892
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	893 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	894 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	895 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	896 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	897
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	898 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	899 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	900 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	901 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	902 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	903
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	904 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	905 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	906
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	907 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	908 """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	909 """
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	910 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	911 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	912 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	913 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	914
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	915 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	916 """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	917 """
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	918 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	919
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	920 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	921
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	922 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	923 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	924 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	925 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	926 def _get_handles(self, stdin, stdout, stderr):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	927 """Construct and return tupel with IO objects:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	928 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	929 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	930 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	931 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	932 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	933
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	934 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	935 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	936 elif stdin == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	937 p2cread, p2cwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	938 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	939 p2cread = stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	940 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	941 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	942 p2cread = stdin.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	943
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	944 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	945 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	946 elif stdout == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	947 c2pread, c2pwrite = os.pipe()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	948 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	949 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	950 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	951 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	952 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	953
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	954 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	955 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	956 elif stderr == PIPE:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	957 errread, errwrite = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	958 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	959 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	960 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	961 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	962 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	963 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	964 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	965
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	966 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	967 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	968 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	969
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	970
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	971 def _set_cloexec_flag(self, fd):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	972 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	973 cloexec_flag = fcntl.FD_CLOEXEC
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	974 except AttributeError:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	975 cloexec_flag = 1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	976
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	977 old = fcntl.fcntl(fd, fcntl.F_GETFD)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	978 fcntl.fcntl(fd, fcntl.F_SETFD, old \| cloexec_flag)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	979
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	980
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	981 def _close_fds(self, but):
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	982 os.closerange(3, but)
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	983 os.closerange(but + 1, MAXFD)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	984
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	985
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	986 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	987 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	988 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	989 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	990 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	991 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	992 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	993
43577 ace45b361e87 Patch# 1258 by Christian Heimes: kill basestring. Guido van Rossum <guido@python.org> parents: 43487 diff changeset	994 if isinstance(args, str):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	995 args = [args]
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	996 else:
cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	997 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	998
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	999 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1000 args = ["/bin/sh", "-c"] + args
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1001
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1002 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003 executable = args[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1004
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1005 # For transferring possible exec failure from child to parent
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1006 # The first char specifies the exception type: 0 means
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1007 # OSError, 1 means some other error.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1008 errpipe_read, errpipe_write = os.pipe()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1009 self._set_cloexec_flag(errpipe_write)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1010
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1011 gc_was_enabled = gc.isenabled()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1012 # 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	1013 # 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	1014 gc.disable()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1015 try:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1016 self.pid = os.fork()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1017 except:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1018 if gc_was_enabled:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1019 gc.enable()
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1020 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	1021 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1022 if self.pid == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 # Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1024 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1025 # Close parent's pipe ends
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1026 if p2cwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1027 os.close(p2cwrite)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1028 if c2pread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1029 os.close(c2pread)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1030 if errread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1031 os.close(errread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1032 os.close(errpipe_read)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1033
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1034 # Dup fds for child
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1035 if p2cread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1036 os.dup2(p2cread, 0)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1037 if c2pwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1038 os.dup2(c2pwrite, 1)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1039 if errwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1040 os.dup2(errwrite, 2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1041
40450 cc992d75d5b3 Four months of trunk changes (including a few releases...) Thomas Wouters <thomas@python.org> parents: 39646 diff changeset	1042 # 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	1043 # 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	1044 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	1045 os.close(p2cread)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1046 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	1047 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	1048 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	1049 errwrite not in (p2cread, c2pwrite, 2)):
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1050 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1051
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1052 # Close all other fds, if asked for
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1053 if close_fds:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1054 self._close_fds(but=errpipe_write)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1055
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1056 if cwd is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1057 os.chdir(cwd)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1058
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1059 if preexec_fn:
37048 c048a09d06ff Remove apply() Neal Norwitz <nnorwitz@gmail.com> parents: 35633 diff changeset	1060 preexec_fn()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1061
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1062 if env is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1063 os.execvp(executable, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1064 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1065 os.execvpe(executable, args, env)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1066
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1067 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1068 exc_type, exc_value, tb = sys.exc_info()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1069 # 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	1070 exc_lines = traceback.format_exception(exc_type,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	1071 exc_value,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	1072 tb)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1073 exc_value.child_traceback = ''.join(exc_lines)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1074 os.write(errpipe_write, pickle.dumps(exc_value))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1075
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1076 # 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	1077 # really doesn't matter what we return.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1078 os._exit(255)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1079
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1080 # Parent
44810 fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1081 if gc_was_enabled:
fa6cee14dcba Merged revisions 60094-60123 via svnmerge from Christian Heimes <christian@cheimes.de> parents: 44160 diff changeset	1082 gc.enable()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1083 os.close(errpipe_write)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1084 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	1085 os.close(p2cread)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1086 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	1087 os.close(c2pwrite)
40893 32c4897b5d46 Merged revisions 53623-53858 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40775 diff changeset	1088 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	1089 os.close(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1090
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1091 # 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	1092 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	1093 os.close(errpipe_read)
41731 78d76435da9a Make test_sys pass. Guido van Rossum <guido@python.org> parents: 41699 diff changeset	1094 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	1095 os.waitpid(self.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1096 child_exception = pickle.loads(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1097 raise child_exception
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1098
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1099
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1100 def _handle_exitstatus(self, sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1101 if os.WIFSIGNALED(sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1102 self.returncode = -os.WTERMSIG(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1103 elif os.WIFEXITED(sts):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1104 self.returncode = os.WEXITSTATUS(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1105 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1106 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1107 raise RuntimeError("Unknown child exit status!")
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
48680 7779af388aec Merged revisions 65459,65472,65481,65518,65536,65581,65609,65637,65641,65644-65645 via svnmerge from Georg Brandl <georg@python.org> parents: 48494 diff changeset	1110 def _internal_poll(self, _deadstate=None):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1111 """Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1112 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1113 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1114 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1115 pid, sts = os.waitpid(self.pid, os.WNOHANG)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1116 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1117 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1118 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	1119 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	1120 self.returncode = _deadstate
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1121 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1122
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1123
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1124 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1125 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1126 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1127 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1128 pid, sts = os.waitpid(self.pid, 0)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1129 self._handle_exitstatus(sts)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1130 return self.returncode
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
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1133 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1134 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1135 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1136 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1137 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1138
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1139 if self.stdin:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1140 # 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	1141 # been writing to .stdin in an uncontrolled fashion.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1142 self.stdin.flush()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1143 if input:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1144 write_set.append(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1145 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1146 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1147 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1148 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1149 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1150 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1151 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1152 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1153
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1154 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1155 while read_set or write_set:
48494 aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1156 try:
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1157 rlist, wlist, xlist = select.select(read_set, write_set, [])
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1158 except select.error as e:
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1159 if e.args[0] == errno.EINTR:
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1160 continue
aca5b2e6a66f Merged revisions 64623,64640,64665,64687,64689-64690,64719,64721,64735,64742,64744-64746,64756-64761,64767-64769,64771-64772,64774-64775,64788,64793,64835-64836 via svnmerge from Georg Brandl <georg@python.org> parents: 48395 diff changeset	1161 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1162
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1163 # 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	1164 # 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	1165
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1166 if self.stdin in wlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1167 # When select has indicated that the file is writable,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1168 # 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	1169 # blocking. POSIX defines PIPE_BUF >= 512
43487 8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1170 chunk = input[input_offset : input_offset + 512]
8c10aac37037 Breaking ground for PEP 3137 implementation: Guido van Rossum <guido@python.org> parents: 42927 diff changeset	1171 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	1172 input_offset += bytes_written
40582 67287ca4e1e8 Merged revisions 53005-53303 via svnmerge from Thomas Wouters <thomas@python.org> parents: 40450 diff changeset	1173 if input_offset >= len(input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1174 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1175 write_set.remove(self.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1176
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1177 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1178 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	1179 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1180 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1181 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1182 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1183
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1184 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1185 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	1186 if not data:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1187 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1188 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1189 stderr.append(data)
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 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1192 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	1193 stdout = b"".join(stdout)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1194 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	1195 stderr = b"".join(stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1196
43777 0d462d789b18 Merging the py3k-pep3137 branch back into the py3k branch. Guido van Rossum <guido@python.org> parents: 43684 diff changeset	1197 # 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	1198 # 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	1199 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	1200 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	1201 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	1202 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	1203 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	1204 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	1205 self.stderr.encoding)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1206
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1207 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1208 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1209
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	1210 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	1211 """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	1212 """
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	1213 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	1214
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	1215 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	1216 """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	1217 """
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	1218 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	1219
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	1220 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	1221 """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	1222 """
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	1223 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	1224
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1225
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1226 def _demo_posix():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1227 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1228 # Example 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1229 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1230 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	1231 print("Process list:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1232 print(plist)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1233
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1234 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1235 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1236 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1237 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1238 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1239 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1240
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1241 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1242 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1243 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1244 print("Looking for 'hda'...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1245 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1246 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	1247 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1248
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1249 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1250 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1251 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1252 print()
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1253 print("Trying a weird file...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1254 try:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1255 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	1256 except OSError as e:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1257 if e.errno == errno.ENOENT:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1258 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	1259 print("Child traceback:")
4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1260 print(e.child_traceback)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1261 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1262 print("Error", e.errno)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1263 else:
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1264 print("Gosh. No error.", file=sys.stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1265
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1266
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1267 def _demo_windows():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1268 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1269 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1270 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1271 print("Looking for 'PROMPT' in set output...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1272 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1273 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	1274 print(repr(p2.communicate()[0]))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1275
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1276 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1277 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1278 #
40775 4cdf21a0dbbc Fix most trivially-findable print statements. Guido van Rossum <guido@python.org> parents: 40742 diff changeset	1279 print("Executing calc...")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1280 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1281 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1282
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1283
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1284 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1285 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1286 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1287 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1288 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 48715:48dddfd2fbf3