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

annotate Lib/subprocess.py @ 80661:94de77bd0b4b 2.7

Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.

author	Andrew Svetlov <andrew.svetlov@gmail.com>
date	Thu, 29 Nov 2012 19:51:28 +0200
parents	2bdd984a55ac
children	a963dd401a63

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 os.popen*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	21 popen2.*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	22 commands.*
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 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	25 modules and functions can be found below.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	26
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	27
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	28
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	29 Using the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	30 ===========================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	31 This module defines one class called Popen:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	32
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	33 class Popen(args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	34 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	35 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	36 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	37 startupinfo=None, creationflags=0):
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	40 Arguments are:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	41
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	42 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	43 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	44 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	45
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	46 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	47 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	48 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	49 as the only item (the program to execute).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	50
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	51 On 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	52 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	53 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	54 will be treated as additional shell arguments.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	55
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	56 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	57 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	58 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	59 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	60 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	61 rules as the MS C runtime.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	62
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	63 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	64 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	65 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	66 (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	67 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	68 bufsize is 0 (unbuffered).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	69
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	70 stdin, stdout and stderr specify the executed programs' standard
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	71 input, standard output and standard error file handles, respectively.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	72 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	73 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	74 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	75 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	76 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	77 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	78 file handle as for stdout.
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 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	81 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	82
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	83 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	84 closed before the child process is executed.
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 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	87 shell.
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 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	90 before the child is executed.
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 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	93 process.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	94
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	95 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	96 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	97 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	98 '\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	99 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	100 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	101 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	102 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	103
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	104 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	105 underlying CreateProcess() function. They can specify things such as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	106 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	107 (Windows only)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	108
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	109
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	110 This module also defines some shortcut functions:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	111
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	112 call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	113 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	114 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	115
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	116 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	117
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	118 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	119
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	120 check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	121 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	122 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	123 CalledProcessError. The CalledProcessError object will have the
39084 9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	124 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	125
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	126 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	127
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	128 check_call(["ls", "-l"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	129
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	130 check_output(popenargs, *kwargs):
57816 d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	131 Run command with arguments and return its output as a byte string.
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	132
57816 d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	133 If the exit code was non-zero it raises a CalledProcessError. The
d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	134 CalledProcessError object will have the return code in the returncode
d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	135 attribute and output in the output attribute.
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	136
57816 d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	137 The arguments are the same as for the Popen constructor. Example:
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	138
57959 fe0459dc9889 #7381: consistency update, and backport avoiding ``None >= 0`` check from py3k. Georg Brandl <georg@python.org> parents: 57816 diff changeset	139 output = check_output(["ls", "-l", "/dev/null"])
fe0459dc9889 #7381: consistency update, and backport avoiding ``None >= 0`` check from py3k. Georg Brandl <georg@python.org> parents: 57816 diff changeset	140
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	141
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	142 Exceptions
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	143 ----------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	144 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	145 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	146 the exception object will have one extra attribute called
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	147 'child_traceback', which is a string containing traceback information
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	148 from the childs point of view.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	149
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	150 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	151 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	152 should prepare for OSErrors.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	153
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	154 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	155
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	156 check_call() and check_output() will raise CalledProcessError, if the
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	157 called process returns a non-zero return code.
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	158
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	159
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	160 Security
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	161 --------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	162 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	163 /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	164 metacharacters, can safely be passed to child processes.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	165
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	166
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	167 Popen objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	168 =============
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	169 Instances of the Popen class have the following methods:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	170
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	171 poll()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	172 Check if child process has terminated. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	173 attribute.
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 wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	176 Wait for child process to terminate. Returns returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	177
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	178 communicate(input=None)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	179 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	180 and stderr, until end-of-file is reached. Wait for process to
40532 a3222075f5c6 SF bug #1623890, fix argument name in docstring Neal Norwitz <nnorwitz@gmail.com> parents: 40244 diff changeset	181 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	182 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	183 the child.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	184
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	185 communicate() returns a tuple (stdout, stderr).
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	186
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	187 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	188 method if the data size is large or unlimited.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	189
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	190 The following attributes are also available:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	191
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	192 stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	193 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	194 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	195
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	196 stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	197 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	198 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	199 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	200
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	201 stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	202 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	203 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	204 None.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	205
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	206 pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	207 The process ID of the child process.
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 returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	210 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	211 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	212 child was terminated by signal N (UNIX only).
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	215 Replacing older functions with the subprocess module
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	216 ====================================================
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	217 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	218 for a.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	219
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	220 Note: 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	221 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	222 exception.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	223
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	224 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	225 imported with "from subprocess import *".
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 /bin/sh shell backquote
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 output=`mycmd myarg`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	231 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	232 output = Popen(["mycmd", "myarg"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	233
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	234
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	235 Replacing shell pipe line
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 output=`dmesg \| grep hda`
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	238 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	239 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	240 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	241 output = p2.communicate()[0]
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	244 Replacing os.system()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	245 ---------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	246 sts = os.system("mycmd" + " myarg")
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 p = Popen("mycmd" + " myarg", shell=True)
39041 8cc9784130a0 Fix doco. Backport candidate. Neal Norwitz <nnorwitz@gmail.com> parents: 38917 diff changeset	249 pid, sts = os.waitpid(p.pid, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	250
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	251 Note:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	252
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	253 * 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	254
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	255 * 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	256 exitstatus.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	257
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	258 A more real-world example would look like this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	259
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	260 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	261 retcode = call("mycmd" + " myarg", shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	262 if retcode < 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	263 print >>sys.stderr, "Child was terminated by signal", -retcode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	264 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	265 print >>sys.stderr, "Child returned", retcode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	266 except OSError, e:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	267 print >>sys.stderr, "Execution failed:", e
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	268
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	269
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	270 Replacing os.spawn*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	271 -------------------
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	272 P_NOWAIT example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	273
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	274 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	275 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	276 pid = Popen(["/bin/mycmd", "myarg"]).pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	277
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	278
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	279 P_WAIT example:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	280
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	281 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	282 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	283 retcode = call(["/bin/mycmd", "myarg"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	284
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	285
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	286 Vector example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	287
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	288 os.spawnvp(os.P_NOWAIT, path, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	289 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	290 Popen([path] + args[1:])
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
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	293 Environment example:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	294
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	295 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	296 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	297 Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	298
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	299
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	300 Replacing os.popen*
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	301 -------------------
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	302 pipe = os.popen("cmd", mode='r', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	303 ==>
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	304 pipe = Popen("cmd", shell=True, bufsize=bufsize, stdout=PIPE).stdout
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	305
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	306 pipe = os.popen("cmd", mode='w', bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	307 ==>
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	308 pipe = Popen("cmd", shell=True, bufsize=bufsize, stdin=PIPE).stdin
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	309
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	310
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	311 (child_stdin, child_stdout) = os.popen2("cmd", mode, bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	312 ==>
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	313 p = Popen("cmd", shell=True, bufsize=bufsize,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	314 stdin=PIPE, stdout=PIPE, close_fds=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	315 (child_stdin, child_stdout) = (p.stdin, p.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	316
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	317
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	318 (child_stdin,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	319 child_stdout,
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	320 child_stderr) = os.popen3("cmd", mode, bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	321 ==>
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	322 p = Popen("cmd", shell=True, bufsize=bufsize,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	323 stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	324 (child_stdin,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	325 child_stdout,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	326 child_stderr) = (p.stdin, p.stdout, p.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	327
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	328
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	329 (child_stdin, child_stdout_and_stderr) = os.popen4("cmd", mode,
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	330 bufsize)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	331 ==>
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	332 p = Popen("cmd", shell=True, bufsize=bufsize,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	333 stdin=PIPE, stdout=PIPE, stderr=STDOUT, close_fds=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	334 (child_stdin, child_stdout_and_stderr) = (p.stdin, p.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	335
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	336 On Unix, os.popen2, os.popen3 and os.popen4 also accept a sequence as
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	337 the command to execute, in which case arguments will be passed
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	338 directly to the program without shell intervention. This usage can be
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	339 replaced as follows:
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	340
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	341 (child_stdin, child_stdout) = os.popen2(["/bin/ls", "-l"], mode,
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	342 bufsize)
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	343 ==>
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	344 p = Popen(["/bin/ls", "-l"], bufsize=bufsize, stdin=PIPE, stdout=PIPE)
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	345 (child_stdin, child_stdout) = (p.stdin, p.stdout)
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	346
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	347 Return code handling translates as follows:
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	348
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	349 pipe = os.popen("cmd", 'w')
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	350 ...
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	351 rc = pipe.close()
59462 6671932bd8b8 Fix syntax: "rc != None" -> "rc is not None" Florent Xicluna <florent.xicluna@gmail.com> parents: 59206 diff changeset	352 if rc is not None and rc % 256:
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	353 print "There were some errors"
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	354 ==>
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	355 process = Popen("cmd", 'w', shell=True, stdin=PIPE)
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	356 ...
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	357 process.stdin.close()
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	358 if process.wait() != 0:
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	359 print "There were some errors"
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	360
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	361
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	362 Replacing popen2.*
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	363 ------------------
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	364 (child_stdout, child_stdin) = popen2.popen2("somestring", bufsize, mode)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	365 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	366 p = Popen(["somestring"], shell=True, bufsize=bufsize
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	367 stdin=PIPE, stdout=PIPE, close_fds=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	368 (child_stdout, child_stdin) = (p.stdout, p.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	369
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	370 On Unix, popen2 also accepts a sequence as the command to execute, in
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	371 which case arguments will be passed directly to the program without
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	372 shell intervention. This usage can be replaced as follows:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	373
56295 7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	374 (child_stdout, child_stdin) = popen2.popen2(["mycmd", "myarg"], bufsize,
7e1856167c4a Merged revisions 75143 via svnmerge from Philip Jenvey <pjenvey@underboss.org> parents: 54796 diff changeset	375 mode)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	376 ==>
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	377 p = Popen(["mycmd", "myarg"], bufsize=bufsize,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	378 stdin=PIPE, stdout=PIPE, close_fds=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	379 (child_stdout, child_stdin) = (p.stdout, p.stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	380
41688 02d2488fec60 Fix typo in docstring (the module is popen2, not 3). Neal Norwitz <nnorwitz@gmail.com> parents: 41533 diff changeset	381 The popen2.Popen3 and popen2.Popen4 basically works as subprocess.Popen,
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	382 except that:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	383
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	384 * subprocess.Popen raises an exception if the execution fails
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	385 * the capturestderr argument is replaced with the stderr argument.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	386 * stdin=PIPE and stdout=PIPE must be specified.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	387 * popen2 closes all filedescriptors by default, but you have to specify
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	388 close_fds=True with subprocess.Popen.
33723 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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	391 import sys
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	392 mswindows = (sys.platform == "win32")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	393
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	394 import os
34624 5fde17b35472 Made the module compatible with Python 2.2 again. Peter Astrand <astrand@lysator.liu.se> parents: 34587 diff changeset	395 import types
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	396 import traceback
44799 0ace74767478 backport r60104 + r60111 from trunk. Gregory P. Smith <greg@mad-scientist.com> parents: 41688 diff changeset	397 import gc
46479 e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	398 import signal
69153 c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	399 import errno
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	400
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	401 # Exception classes used by this module.
39084 9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	402 class CalledProcessError(Exception):
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	403 """This exception is raised when a process run by check_call() or
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	404 check_output() returns a non-zero exit status.
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	405 The exit status will be stored in the returncode attribute;
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	406 check_output() will also store the output in the output attribute.
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	407 """
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	408 def __init__(self, returncode, cmd, output=None):
39084 9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	409 self.returncode = returncode
9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	410 self.cmd = cmd
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	411 self.output = output
39084 9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	412 def __str__(self):
9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	413 return "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
39117 acff1c34cca3 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 39084 diff changeset	414
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	415
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	416 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	417 import threading
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	418 import msvcrt
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	419 import _subprocess
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	420 class STARTUPINFO:
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	421 dwFlags = 0
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	422 hStdInput = None
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	423 hStdOutput = None
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	424 hStdError = None
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	425 wShowWindow = 0
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	426 class pywintypes:
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	427 error = IOError
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	428 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	429 import select
55092 9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	430 _has_poll = hasattr(select, 'poll')
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	431 import fcntl
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	432 import pickle
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	433
55178 5609352fea12 #6416: Fix compilation of the select module on Windows, as well as test_subprocess: Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55092 diff changeset	434 # When select or poll has indicated that the file is writable,
5609352fea12 #6416: Fix compilation of the select module on Windows, as well as test_subprocess: Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55092 diff changeset	435 # we can write up to _PIPE_BUF bytes without risk of blocking.
5609352fea12 #6416: Fix compilation of the select module on Windows, as well as test_subprocess: Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55092 diff changeset	436 # POSIX defines PIPE_BUF as >= 512.
5609352fea12 #6416: Fix compilation of the select module on Windows, as well as test_subprocess: Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55092 diff changeset	437 _PIPE_BUF = getattr(select, 'PIPE_BUF', 512)
5609352fea12 #6416: Fix compilation of the select module on Windows, as well as test_subprocess: Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55092 diff changeset	438
5609352fea12 #6416: Fix compilation of the select module on Windows, as well as test_subprocess: Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55092 diff changeset	439
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	440 __all__ = ["Popen", "PIPE", "STDOUT", "call", "check_call",
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	441 "check_output", "CalledProcessError"]
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	442
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	443 if mswindows:
69692 768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	444 from _subprocess import (CREATE_NEW_CONSOLE, CREATE_NEW_PROCESS_GROUP,
768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	445 STD_INPUT_HANDLE, STD_OUTPUT_HANDLE,
768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	446 STD_ERROR_HANDLE, SW_HIDE,
768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	447 STARTF_USESTDHANDLES, STARTF_USESHOWWINDOW)
69694 d5936bfa28d3 whitespace fix Brian Curtin <brian@python.org> parents: 69692 diff changeset	448
69692 768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	449 __all__.extend(["CREATE_NEW_CONSOLE", "CREATE_NEW_PROCESS_GROUP",
768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	450 "STD_INPUT_HANDLE", "STD_OUTPUT_HANDLE",
768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	451 "STD_ERROR_HANDLE", "SW_HIDE",
768d58f7357c merge Brian Curtin <brian@python.org> parents: 69153 diff changeset	452 "STARTF_USESTDHANDLES", "STARTF_USESHOWWINDOW"])
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	453 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	454 MAXFD = os.sysconf("SC_OPEN_MAX")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	455 except:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	456 MAXFD = 256
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	457
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	458 _active = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	459
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	460 def _cleanup():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	461 for inst in _active[:]:
59831 38e9b9da0164 Merged revisions 76538,76559,76882-76883,76886,76891-76892,76920,76924-76925,77081,77084,77086,77092 via svnmerge from Georg Brandl <georg@python.org> parents: 59208 diff changeset	462 res = inst._internal_poll(_deadstate=sys.maxint)
71899 9ee802642d86 Issue #12650: Fix a race condition where a subprocess.Popen could leak Charles-François Natali <neologix@free.fr> parents: 71530 diff changeset	463 if res is not None:
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	464 try:
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	465 _active.remove(inst)
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	466 except ValueError:
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	467 # This can happen if two threads create a new Popen instance.
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	468 # It's harmless that it was already removed, so ignore.
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	469 pass
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	470
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	471 PIPE = -1
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	472 STDOUT = -2
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	473
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	474
59208 12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	475 def _eintr_retry_call(func, *args):
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	476 while True:
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	477 try:
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	478 return func(*args)
71230 6a28ccde2f1b Issue #12493: subprocess: communicate() handles EINTR Victor Stinner <victor.stinner@haypocalc.com> parents: 70556 diff changeset	479 except (OSError, IOError) as e:
59208 12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	480 if e.errno == errno.EINTR:
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	481 continue
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	482 raise
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	483
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	484
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	485 def call(popenargs, *kwargs):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	486 """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	487 return the returncode attribute.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	488
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	489 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	490
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	491 retcode = call(["ls", "-l"])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	492 """
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	493 return Popen(popenargs, *kwargs).wait()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	494
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	495
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	496 def check_call(popenargs, *kwargs):
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	497 """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	498 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	499 CalledProcessError. The CalledProcessError object will have the
39084 9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	500 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	501
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	502 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	503
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	504 check_call(["ls", "-l"])
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	505 """
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	506 retcode = call(popenargs, *kwargs)
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	507 if retcode:
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	508 cmd = kwargs.get("args")
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	509 if cmd is None:
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	510 cmd = popenargs[0]
39084 9f2c3de74856 Bug #1223937: CalledProcessError.errno -> CalledProcessError.returncode. Peter Astrand <astrand@lysator.liu.se> parents: 39041 diff changeset	511 raise CalledProcessError(retcode, cmd)
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	512 return 0
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	513
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	514
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	515 def check_output(popenargs, *kwargs):
57816 d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	516 r"""Run command with arguments and return its output as a byte string.
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	517
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	518 If the exit code was non-zero it raises a CalledProcessError. The
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	519 CalledProcessError object will have the return code in the returncode
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	520 attribute and output in the output attribute.
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	521
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	522 The arguments are the same as for the Popen constructor. Example:
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	523
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	524 >>> check_output(["ls", "-l", "/dev/null"])
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	525 'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	526
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	527 The stdout argument is not allowed as it is used internally.
57959 fe0459dc9889 #7381: consistency update, and backport avoiding ``None >= 0`` check from py3k. Georg Brandl <georg@python.org> parents: 57816 diff changeset	528 To capture standard error in the result, use stderr=STDOUT.
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	529
49984 589cde614b5b rename the new check_call_output to check_output. its less ugly. Gregory P. Smith <greg@mad-scientist.com> parents: 49977 diff changeset	530 >>> check_output(["/bin/sh", "-c",
57816 d890c8ffad02 #7381: subprocess documentation and library docstring consistency fixes. Georg Brandl <georg@python.org> parents: 57153 diff changeset	531 ... "ls -l non_existent_file ; exit 0"],
57959 fe0459dc9889 #7381: consistency update, and backport avoiding ``None >= 0`` check from py3k. Georg Brandl <georg@python.org> parents: 57816 diff changeset	532 ... stderr=STDOUT)
51775 af9b6c43804e Issue #5341: Fix a variety of spelling errors. Mark Dickinson <dickinsm@gmail.com> parents: 51636 diff changeset	533 'ls: non_existent_file: No such file or directory\n'
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	534 """
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	535 if 'stdout' in kwargs:
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	536 raise ValueError('stdout argument not allowed, it will be overridden.')
54792 37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	537 process = Popen(stdout=PIPE, popenargs, *kwargs)
49977 4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	538 output, unused_err = process.communicate()
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	539 retcode = process.poll()
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	540 if retcode:
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	541 cmd = kwargs.get("args")
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	542 if cmd is None:
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	543 cmd = popenargs[0]
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	544 raise CalledProcessError(retcode, cmd, output=output)
4790b31d9257 Adds a subprocess.check_call_output() function to return the output from a Gregory P. Smith <greg@mad-scientist.com> parents: 48194 diff changeset	545 return output
34302 998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	546
998fb1e1c8e9 New subprocess utility function: check_call. Closes #1071764. Peter Astrand <astrand@lysator.liu.se> parents: 34111 diff changeset	547
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	548 def list2cmdline(seq):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	549 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	550 Translate a sequence of arguments into a command line
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	551 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	552
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	553 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	554 space or a tab.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	555
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	556 2) A string surrounded by double quotation marks is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	557 interpreted as a single argument, regardless of white space
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	558 contained within. A quoted string can be embedded in an
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	559 argument.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	560
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	561 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	562 interpreted as a literal double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	563
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	564 4) Backslashes are interpreted literally, unless they
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	565 immediately precede a double quotation mark.
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	566
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	567 5) If backslashes immediately precede a double quotation mark,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	568 every pair of backslashes is interpreted as a literal
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	569 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	570 backslash escapes the next double quotation mark as
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	571 described in rule 3.
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
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	574 # See
57154 267a418ebbc9 Merged revisions 76168 via svnmerge from Eric Smith <eric@trueblade.com> parents: 56295 diff changeset	575 # http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
267a418ebbc9 Merged revisions 76168 via svnmerge from Eric Smith <eric@trueblade.com> parents: 56295 diff changeset	576 # or search http://msdn.microsoft.com for
267a418ebbc9 Merged revisions 76168 via svnmerge from Eric Smith <eric@trueblade.com> parents: 56295 diff changeset	577 # "Parsing C++ Command-Line Arguments"
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	578 result = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	579 needquote = False
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	580 for arg in seq:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	581 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	582
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	583 # 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	584 if result:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	585 result.append(' ')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	586
62403 1f0e0781f73e Merged revisions 82075 via svnmerge from Jean-Paul Calderone <exarkun@divmod.com> parents: 61583 diff changeset	587 needquote = (" " in arg) or ("\t" in arg) or not arg
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	588 if needquote:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	589 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	590
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	591 for c in arg:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	592 if c == '\\':
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	593 # 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	594 bs_buf.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	595 elif c == '"':
44790 210323e2a927 fix comment typos, use not arg instead of arg == "", add test coverage Gregory P. Smith <greg@mad-scientist.com> parents: 44785 diff changeset	596 # Double backslashes.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	597 result.append('\\' * len(bs_buf)*2)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	598 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	599 result.append('\\"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	600 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	601 # Normal char
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	602 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	603 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	604 bs_buf = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	605 result.append(c)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	606
44790 210323e2a927 fix comment typos, use not arg instead of arg == "", add test coverage Gregory P. Smith <greg@mad-scientist.com> parents: 44785 diff changeset	607 # Add remaining backslashes, if any.
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	608 if bs_buf:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	609 result.extend(bs_buf)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	610
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	611 if needquote:
34675 8f0456425715 Corrected bug in list2cmdline wrt backslashes. Fixes #1083306. Peter Astrand <astrand@lysator.liu.se> parents: 34672 diff changeset	612 result.extend(bs_buf)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	613 result.append('"')
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	614
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	615 return ''.join(result)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	616
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	617
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	618 class Popen(object):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	619 def __init__(self, args, bufsize=0, executable=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	620 stdin=None, stdout=None, stderr=None,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	621 preexec_fn=None, close_fds=False, shell=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	622 cwd=None, env=None, universal_newlines=False,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	623 startupinfo=None, creationflags=0):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	624 """Create new Popen instance."""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	625 _cleanup()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	626
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	627 self._child_created = False
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	628 if not isinstance(bufsize, (int, long)):
79d2ae0a62ef Raise TypeError if bufsize argument is not an integer. Patch 1071755, slightly modified. Peter Astrand <astrand@lysator.liu.se> parents: 34050 diff changeset	629 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	630
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	631 if mswindows:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	632 if preexec_fn is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	633 raise ValueError("preexec_fn is not supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	634 "platforms")
41886 ec3b8e94a355 Applied patch 1669481, slightly modified: Support close_fds on Win32 Peter Astrand <astrand@lysator.liu.se> parents: 41689 diff changeset	635 if close_fds and (stdin is not None or stdout is not None or
ec3b8e94a355 Applied patch 1669481, slightly modified: Support close_fds on Win32 Peter Astrand <astrand@lysator.liu.se> parents: 41689 diff changeset	636 stderr is not None):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	637 raise ValueError("close_fds is not supported on Windows "
41886 ec3b8e94a355 Applied patch 1669481, slightly modified: Support close_fds on Win32 Peter Astrand <astrand@lysator.liu.se> parents: 41689 diff changeset	638 "platforms if you redirect stdin/stdout/stderr")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	639 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	640 # POSIX
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	641 if startupinfo is not None:
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	642 raise ValueError("startupinfo is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	643 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	644 if creationflags != 0:
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	645 raise ValueError("creationflags is only supported on Windows "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	646 "platforms")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	647
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	648 self.stdin = None
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	649 self.stdout = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	650 self.stderr = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	651 self.pid = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	652 self.returncode = None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	653 self.universal_newlines = universal_newlines
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	654
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	655 # Input and output objects. The general principle is like
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	656 # this:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	657 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	658 # Parent Child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	659 # ------ -----
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	660 # p2cwrite ---stdin---> p2cread
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	661 # c2pread <--stdout--- c2pwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	662 # errread <--stderr--- errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	663 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	664 # On POSIX, the child objects are file descriptors. On
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	665 # Windows, these are Windows file handles. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	666 # are file descriptors on both platforms. The parent objects
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	667 # 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	668 # when not redirecting.
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	669
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	670 (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	671 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	672 errread, errwrite) = self._get_handles(stdin, stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	673
80371 e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	674 try:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	675 self._execute_child(args, executable, preexec_fn, close_fds,
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	676 cwd, env, universal_newlines,
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	677 startupinfo, creationflags, shell,
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	678 p2cread, p2cwrite,
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	679 c2pread, c2pwrite,
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	680 errread, errwrite)
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	681 except Exception:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	682 # Preserve original exception in case os.close raises.
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	683 exc_type, exc_value, exc_trace = sys.exc_info()
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	684
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	685 to_close = []
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	686 # Only close the pipes we created.
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	687 if stdin == PIPE:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	688 to_close.extend((p2cread, p2cwrite))
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	689 if stdout == PIPE:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	690 to_close.extend((c2pread, c2pwrite))
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	691 if stderr == PIPE:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	692 to_close.extend((errread, errwrite))
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	693
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	694 for fd in to_close:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	695 try:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	696 os.close(fd)
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	697 except EnvironmentError:
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	698 pass
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	699
e67620048d2f Fixes issue #16327: The subprocess module no longer leaks file descriptors Gregory P. Smith <greg@krypto.org> parents: 80367 diff changeset	700 raise exc_type, exc_value, exc_trace
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	701
40747 265c51ba3910 Applied patch 1124861.3.patch to solve bug #1124861: Automatically create pipes on Windows, if GetStdHandle fails. Backport from rev 53646. Peter Astrand <astrand@lysator.liu.se> parents: 40686 diff changeset	702 if mswindows:
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	703 if p2cwrite is not None:
7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	704 p2cwrite = msvcrt.open_osfhandle(p2cwrite.Detach(), 0)
7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	705 if c2pread is not None:
7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	706 c2pread = msvcrt.open_osfhandle(c2pread.Detach(), 0)
7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	707 if errread is not None:
7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	708 errread = msvcrt.open_osfhandle(errread.Detach(), 0)
40747 265c51ba3910 Applied patch 1124861.3.patch to solve bug #1124861: Automatically create pipes on Windows, if GetStdHandle fails. Backport from rev 53646. Peter Astrand <astrand@lysator.liu.se> parents: 40686 diff changeset	709
40740 ad8cdfb69872 We had several if statements checking the value of a fd. This is unsafe, since valid fds might be zero. We should check for not None instead. Peter Astrand <astrand@lysator.liu.se> parents: 40732 diff changeset	710 if p2cwrite is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	711 self.stdin = os.fdopen(p2cwrite, 'wb', bufsize)
40740 ad8cdfb69872 We had several if statements checking the value of a fd. This is unsafe, since valid fds might be zero. We should check for not None instead. Peter Astrand <astrand@lysator.liu.se> parents: 40732 diff changeset	712 if c2pread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	713 if universal_newlines:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	714 self.stdout = os.fdopen(c2pread, 'rU', bufsize)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	715 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	716 self.stdout = os.fdopen(c2pread, 'rb', bufsize)
40740 ad8cdfb69872 We had several if statements checking the value of a fd. This is unsafe, since valid fds might be zero. We should check for not None instead. Peter Astrand <astrand@lysator.liu.se> parents: 40732 diff changeset	717 if errread is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	718 if universal_newlines:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	719 self.stderr = os.fdopen(errread, 'rU', bufsize)
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 self.stderr = os.fdopen(errread, 'rb', bufsize)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	722
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	723
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	724 def _translate_newlines(self, data):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	725 data = data.replace("\r\n", "\n")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	726 data = data.replace("\r", "\n")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	727 return data
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	728
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	729
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	730 def __del__(self, _maxint=sys.maxint, _active=_active):
70556 26ea0a46aadd Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 69694 diff changeset	731 # If __init__ hasn't had a chance to execute (e.g. if it
26ea0a46aadd Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 69694 diff changeset	732 # was passed an undeclared keyword argument), we don't
26ea0a46aadd Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 69694 diff changeset	733 # have a _child_created attribute at all.
26ea0a46aadd Close #12085: Fix an attribute error in subprocess.Popen destructor if the Victor Stinner <victor.stinner@haypocalc.com> parents: 69694 diff changeset	734 if not getattr(self, '_child_created', False):
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	735 # We didn't get to successfully create a child process.
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	736 return
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	737 # In case the child hasn't been waited on, check if it's done.
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	738 self._internal_poll(_deadstate=_maxint)
39122 8fe6786f5144 Guard for _active being None in __del__ method. Georg Brandl <georg@python.org> parents: 39117 diff changeset	739 if self.returncode is None and _active is not None:
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	740 # Child is still running, keep us alive until we can wait on it.
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	741 _active.append(self)
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	742
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	743
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	744 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	745 """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	746 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	747 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	748 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	749 should be sent to the child.
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	750
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	751 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	752
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	753 # 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	754 # 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	755 if [self.stdin, self.stdout, self.stderr].count(None) >= 2:
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	756 stdout = None
4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	757 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	758 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	759 if input:
69153 c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	760 try:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	761 self.stdin.write(input)
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	762 except IOError as e:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	763 if e.errno != errno.EPIPE and e.errno != errno.EINVAL:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	764 raise
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	765 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	766 elif self.stdout:
71230 6a28ccde2f1b Issue #12493: subprocess: communicate() handles EINTR Victor Stinner <victor.stinner@haypocalc.com> parents: 70556 diff changeset	767 stdout = _eintr_retry_call(self.stdout.read)
47437 6404446e5aa3 Backport r62724 from trunk. Fixes issue 2791. subprocess.Popen.communicate Gregory P. Smith <greg@mad-scientist.com> parents: 44799 diff changeset	768 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	769 elif self.stderr:
71230 6a28ccde2f1b Issue #12493: subprocess: communicate() handles EINTR Victor Stinner <victor.stinner@haypocalc.com> parents: 70556 diff changeset	770 stderr = _eintr_retry_call(self.stderr.read)
47437 6404446e5aa3 Backport r62724 from trunk. Fixes issue 2791. subprocess.Popen.communicate Gregory P. Smith <greg@mad-scientist.com> parents: 44799 diff changeset	771 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	772 self.wait()
085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	773 return (stdout, stderr)
34818 4eaab38566c9 Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 34675 diff changeset	774
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	775 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	776
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	777
48155 dc850da04bd5 (backport r65459 from trunk) Gregory P. Smith <greg@mad-scientist.com> parents: 47437 diff changeset	778 def poll(self):
dc850da04bd5 (backport r65459 from trunk) Gregory P. Smith <greg@mad-scientist.com> parents: 47437 diff changeset	779 return self._internal_poll()
dc850da04bd5 (backport r65459 from trunk) Gregory P. Smith <greg@mad-scientist.com> parents: 47437 diff changeset	780
dc850da04bd5 (backport r65459 from trunk) Gregory P. Smith <greg@mad-scientist.com> parents: 47437 diff changeset	781
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	782 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	783 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	784 # Windows methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	785 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	786 def _get_handles(self, stdin, stdout, stderr):
55192 14cd19feaf20 #6447: typo in subprocess docstring Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55178 diff changeset	787 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	788 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	789 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	790 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	791 return (None, None, None, None, None, None)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	792
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	793 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	794 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	795 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	796
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	797 if stdin is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	798 p2cread = _subprocess.GetStdHandle(_subprocess.STD_INPUT_HANDLE)
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	799 if p2cread is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	800 p2cread, _ = _subprocess.CreatePipe(None, 0)
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	801 elif stdin == PIPE:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	802 p2cread, p2cwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	803 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	804 p2cread = msvcrt.get_osfhandle(stdin)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	805 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	806 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	807 p2cread = msvcrt.get_osfhandle(stdin.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	808 p2cread = self._make_inheritable(p2cread)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	809
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	810 if stdout is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	811 c2pwrite = _subprocess.GetStdHandle(_subprocess.STD_OUTPUT_HANDLE)
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	812 if c2pwrite is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	813 _, c2pwrite = _subprocess.CreatePipe(None, 0)
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	814 elif stdout == PIPE:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	815 c2pread, c2pwrite = _subprocess.CreatePipe(None, 0)
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	816 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	817 c2pwrite = msvcrt.get_osfhandle(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	818 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	819 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	820 c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	821 c2pwrite = self._make_inheritable(c2pwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	822
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	823 if stderr is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	824 errwrite = _subprocess.GetStdHandle(_subprocess.STD_ERROR_HANDLE)
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	825 if errwrite is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	826 _, errwrite = _subprocess.CreatePipe(None, 0)
51986 7111845c2f5e Merged revisions 70137 via svnmerge from Hirokazu Yamamoto <ocean-city@m2.ccsnet.ne.jp> parents: 51637 diff changeset	827 elif stderr == PIPE:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	828 errread, errwrite = _subprocess.CreatePipe(None, 0)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	829 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	830 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	831 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	832 errwrite = msvcrt.get_osfhandle(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	833 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	834 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	835 errwrite = msvcrt.get_osfhandle(stderr.fileno())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	836 errwrite = self._make_inheritable(errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	837
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	838 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	839 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	840 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	841
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	842
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	843 def _make_inheritable(self, handle):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	844 """Return a duplicate of handle, which is inheritable"""
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	845 return _subprocess.DuplicateHandle(_subprocess.GetCurrentProcess(),
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	846 handle, _subprocess.GetCurrentProcess(), 0, 1,
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	847 _subprocess.DUPLICATE_SAME_ACCESS)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	848
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	849
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	850 def _find_w9xpopen(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	851 """Find and return absolut path to w9xpopen.exe"""
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	852 w9xpopen = os.path.join(
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	853 os.path.dirname(_subprocess.GetModuleFileName(0)),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	854 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	855 if not os.path.exists(w9xpopen):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	856 # Eeek - file-not-found - possibly an embedding
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	857 # 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	858 w9xpopen = os.path.join(os.path.dirname(sys.exec_prefix),
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	859 "w9xpopen.exe")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	860 if not os.path.exists(w9xpopen):
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	861 raise RuntimeError("Cannot locate w9xpopen.exe, which is "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	862 "needed for Popen to work with your "
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	863 "shell or platform.")
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	864 return w9xpopen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	865
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	866
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	867 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	868 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	869 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	870 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	871 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	872 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	873 """Execute program (MS Windows version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	874
34624 5fde17b35472 Made the module compatible with Python 2.2 again. Peter Astrand <astrand@lysator.liu.se> parents: 34587 diff changeset	875 if not isinstance(args, types.StringTypes):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	876 args = list2cmdline(args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	877
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	878 # Process startup details
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	879 if startupinfo is None:
38589 7d31d031f8e1 Bug #1500293: fix memory leaks in _subprocess module. Georg Brandl <georg@python.org> parents: 38078 diff changeset	880 startupinfo = STARTUPINFO()
7d31d031f8e1 Bug #1500293: fix memory leaks in _subprocess module. Georg Brandl <georg@python.org> parents: 38078 diff changeset	881 if None not in (p2cread, c2pwrite, errwrite):
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	882 startupinfo.dwFlags \|= _subprocess.STARTF_USESTDHANDLES
33929 66223a9ebe48 When using shell=True on Windows, don't display a shell window by default. Fixes #1057061. Peter Astrand <astrand@lysator.liu.se> parents: 33776 diff changeset	883 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	884 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	885 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	886
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	887 if shell:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	888 startupinfo.dwFlags \|= _subprocess.STARTF_USESHOWWINDOW
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	889 startupinfo.wShowWindow = _subprocess.SW_HIDE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	890 comspec = os.environ.get("COMSPEC", "cmd.exe")
63931 ab2d94931b0c #2304: fix incorporating Eric Smith's .format suggestion and tested on Ubuntu as well as Windows Tim Golden <mail@timgolden.me.uk> parents: 63842 diff changeset	891 args = '{} /c "{}"'.format (comspec, args)
ab2d94931b0c #2304: fix incorporating Eric Smith's .format suggestion and tested on Ubuntu as well as Windows Tim Golden <mail@timgolden.me.uk> parents: 63842 diff changeset	892 if (_subprocess.GetVersion() >= 0x80000000 or
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	893 os.path.basename(comspec).lower() == "command.com"):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	894 # 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	895 # use the w9xpopen intermediate program. For more
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	896 # information, see KB Q150956
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	897 # (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	898 w9xpopen = self._find_w9xpopen()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	899 args = '"%s" %s' % (w9xpopen, args)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	900 # Not passing CREATE_NEW_CONSOLE has been known to
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	901 # cause random failures on win9x. Specifically a
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	902 # dialog: "Your program accessed mem currently in
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	903 # use at xxx" and a hopeful warning about the
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	904 # stability of your system. Cost is Ctrl+C wont
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	905 # kill children.
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	906 creationflags \|= _subprocess.CREATE_NEW_CONSOLE
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	907
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	908 # Start the process
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	909 try:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	910 hp, ht, pid, tid = _subprocess.CreateProcess(executable, args,
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	911 # no special security
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	912 None, None,
41886 ec3b8e94a355 Applied patch 1669481, slightly modified: Support close_fds on Win32 Peter Astrand <astrand@lysator.liu.se> parents: 41689 diff changeset	913 int(not close_fds),
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	914 creationflags,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	915 env,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	916 cwd,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	917 startupinfo)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	918 except pywintypes.error, e:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	919 # Translate pywintypes.error to WindowsError, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	920 # a subclass of OSError. FIXME: We should really
68588 cd8d3c2d3bce #11565: Fix several typos. Patch by Piotr Kasprzyk. Ezio Melotti <ezio.melotti@gmail.com> parents: 68256 diff changeset	921 # translate errno using _sys_errlist (or similar), but
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	922 # how can this be done from Python?
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	923 raise WindowsError(*e.args)
63814 a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	924 finally:
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	925 # Child is launched. Close the parent's copy of those pipe
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	926 # handles that only the child should have open. You need
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	927 # to make sure that no handles to the write end of the
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	928 # output pipe are maintained in this process or else the
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	929 # pipe will not close when the child process exits and the
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	930 # ReadFile will hang.
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	931 if p2cread is not None:
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	932 p2cread.Close()
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	933 if c2pwrite is not None:
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	934 c2pwrite.Close()
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	935 if errwrite is not None:
a0bdcdd0f086 Issue #3210: Revert C module changes and apply patch from Hirokazu Yamamoto instead Tim Golden <mail@timgolden.me.uk> parents: 63096 diff changeset	936 errwrite.Close()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	937
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	938 # Retain the process handle, but close the thread handle
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	939 self._child_created = True
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	940 self._handle = hp
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	941 self.pid = pid
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	942 ht.Close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	943
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	944 def _internal_poll(self, _deadstate=None,
61583 0d028d3590da Merged revisions 81179 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61568 diff changeset	945 _WaitForSingleObject=_subprocess.WaitForSingleObject,
0d028d3590da Merged revisions 81179 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61568 diff changeset	946 _WAIT_OBJECT_0=_subprocess.WAIT_OBJECT_0,
0d028d3590da Merged revisions 81179 via svnmerge from Victor Stinner <victor.stinner@haypocalc.com> parents: 61568 diff changeset	947 _GetExitCodeProcess=_subprocess.GetExitCodeProcess):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	948 """Check if child process has terminated. Returns returncode
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	949 attribute.
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	950
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	951 This method is called by __del__, so it can only refer to objects
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	952 in its local scope.
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	953
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	954 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	955 if self.returncode is None:
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	956 if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	957 self.returncode = _GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	958 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	959
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	960
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	961 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	962 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	963 attribute."""
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	964 if self.returncode is None:
60921 2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	965 _subprocess.WaitForSingleObject(self._handle,
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	966 _subprocess.INFINITE)
2a768ea06023 Merged revisions 80439 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 59831 diff changeset	967 self.returncode = _subprocess.GetExitCodeProcess(self._handle)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	968 return self.returncode
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 _readerthread(self, fh, buffer):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	972 buffer.append(fh.read())
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	973
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	974
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	975 def _communicate(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	976 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	977 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	978
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	979 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	980 stdout = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	981 stdout_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	982 args=(self.stdout, stdout))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	983 stdout_thread.setDaemon(True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	984 stdout_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	985 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	986 stderr = []
33735 1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	987 stderr_thread = threading.Thread(target=self._readerthread,
1383c4692af7 Folded long lines. Tim Peters <tim.peters@gmail.com> parents: 33731 diff changeset	988 args=(self.stderr, stderr))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	989 stderr_thread.setDaemon(True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	990 stderr_thread.start()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	991
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	992 if self.stdin:
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	993 if input is not None:
69153 c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	994 try:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	995 self.stdin.write(input)
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	996 except IOError as e:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	997 if e.errno != errno.EPIPE:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	998 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	999 self.stdin.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1000
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1001 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1002 stdout_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1003 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1004 stderr_thread.join()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1005
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1006 # All data exchanged. Translate lists into strings.
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1007 if stdout is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1008 stdout = stdout[0]
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1009 if stderr is not None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1010 stderr = stderr[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1011
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1012 # Translate newlines, if requested. We cannot let the file
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1013 # object do the translation: It is based on stdio, which is
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1014 # impossible to combine with select (unless forcing no
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1015 # buffering).
38078 b1cbc605bec9 Try to fix breakage caused by patch #1479181, r45850 Neal Norwitz <nnorwitz@gmail.com> parents: 37563 diff changeset	1016 if self.universal_newlines and hasattr(file, 'newlines'):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1017 if stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1018 stdout = self._translate_newlines(stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1019 if stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1020 stderr = self._translate_newlines(stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1021
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1022 self.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1023 return (stdout, stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1024
46479 e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1025 def send_signal(self, sig):
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1026 """Send a signal to the process
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1027 """
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1028 if sig == signal.SIGTERM:
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1029 self.terminate()
60197 0ab89e8bdedc Implement #1220212. Add os.kill support for Windows. Brian Curtin <brian.curtin@gmail.com> parents: 59462 diff changeset	1030 elif sig == signal.CTRL_C_EVENT:
0ab89e8bdedc Implement #1220212. Add os.kill support for Windows. Brian Curtin <brian.curtin@gmail.com> parents: 59462 diff changeset	1031 os.kill(self.pid, signal.CTRL_C_EVENT)
0ab89e8bdedc Implement #1220212. Add os.kill support for Windows. Brian Curtin <brian.curtin@gmail.com> parents: 59462 diff changeset	1032 elif sig == signal.CTRL_BREAK_EVENT:
0ab89e8bdedc Implement #1220212. Add os.kill support for Windows. Brian Curtin <brian.curtin@gmail.com> parents: 59462 diff changeset	1033 os.kill(self.pid, signal.CTRL_BREAK_EVENT)
46479 e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1034 else:
64519 e4de2176f98e Merged revisions 84582 via svnmerge from Brian Curtin <brian.curtin@gmail.com> parents: 64494 diff changeset	1035 raise ValueError("Unsupported signal: {}".format(sig))
46479 e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1036
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1037 def terminate(self):
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1038 """Terminates the process
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1039 """
75526 b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1040 try:
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1041 _subprocess.TerminateProcess(self._handle, 1)
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1042 except OSError as e:
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1043 # ERROR_ACCESS_DENIED (winerror 5) is received when the
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1044 # process already died.
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1045 if e.winerror != 5:
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1046 raise
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1047 rc = _subprocess.GetExitCodeProcess(self._handle)
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1048 if rc == _subprocess.STILL_ACTIVE:
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1049 raise
b6ec3b717f7e Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under Windows when the child process has already exited. Antoine Pitrou <solipsis@pitrou.net> parents: 72076 diff changeset	1050 self.returncode = rc
46479 e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1051
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1052 kill = terminate
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1053
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1054 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1055 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1056 # POSIX methods
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1057 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1058 def _get_handles(self, stdin, stdout, stderr):
55192 14cd19feaf20 #6447: typo in subprocess docstring Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 55178 diff changeset	1059 """Construct and return tuple with IO objects:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1060 p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1061 """
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1062 p2cread, p2cwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1063 c2pread, c2pwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1064 errread, errwrite = None, None
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1065
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1066 if stdin is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1067 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1068 elif stdin == PIPE:
72076 498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1069 p2cread, p2cwrite = self.pipe_cloexec()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1070 elif isinstance(stdin, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1071 p2cread = stdin
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1072 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1073 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1074 p2cread = stdin.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1075
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1076 if stdout is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1077 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1078 elif stdout == PIPE:
72076 498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1079 c2pread, c2pwrite = self.pipe_cloexec()
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1080 elif isinstance(stdout, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1081 c2pwrite = stdout
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1082 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1083 # Assuming file-like object
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1084 c2pwrite = stdout.fileno()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1085
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1086 if stderr is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1087 pass
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1088 elif stderr == PIPE:
72076 498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1089 errread, errwrite = self.pipe_cloexec()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1090 elif stderr == STDOUT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1091 errwrite = c2pwrite
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1092 elif isinstance(stderr, int):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1093 errwrite = stderr
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1094 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1095 # Assuming file-like object
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1096 errwrite = stderr.fileno()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1097
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1098 return (p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1099 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1100 errread, errwrite)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1101
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1102
67312 a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1103 def _set_cloexec_flag(self, fd, cloexec=True):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1104 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1105 cloexec_flag = fcntl.FD_CLOEXEC
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1106 except AttributeError:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1107 cloexec_flag = 1
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 old = fcntl.fcntl(fd, fcntl.F_GETFD)
67312 a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1110 if cloexec:
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1111 fcntl.fcntl(fd, fcntl.F_SETFD, old \| cloexec_flag)
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1112 else:
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1113 fcntl.fcntl(fd, fcntl.F_SETFD, old & ~cloexec_flag)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1114
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1115
72076 498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1116 def pipe_cloexec(self):
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1117 """Create a pipe with FDs set CLOEXEC."""
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1118 # Pipes' FDs are set CLOEXEC by default because we don't want them
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1119 # to be inherited by other subprocesses: the CLOEXEC flag is removed
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1120 # from the child's FDs by _dup2(), between fork() and exec().
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1121 # This is not atomic: we would need the pipe2() syscall for that.
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1122 r, w = os.pipe()
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1123 self._set_cloexec_flag(r)
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1124 self._set_cloexec_flag(w)
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1125 return r, w
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1126
498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1127
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1128 def _close_fds(self, but):
54792 37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1129 if hasattr(os, 'closerange'):
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1130 os.closerange(3, but)
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1131 os.closerange(but + 1, MAXFD)
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1132 else:
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1133 for i in xrange(3, MAXFD):
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1134 if i == but:
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1135 continue
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1136 try:
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1137 os.close(i)
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1138 except:
37223ef4d470 #6189: The subprocess.py module should be kept compatible with python 2.2 Amaury Forgeot d'Arc <amauryfa@gmail.com> parents: 51977 diff changeset	1139 pass
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1140
53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1141
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1142 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	1143 cwd, env, universal_newlines,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1144 startupinfo, creationflags, shell,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1145 p2cread, p2cwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1146 c2pread, c2pwrite,
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1147 errread, errwrite):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1148 """Execute program (POSIX version)"""
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1149
34624 5fde17b35472 Made the module compatible with Python 2.2 again. Peter Astrand <astrand@lysator.liu.se> parents: 34587 diff changeset	1150 if isinstance(args, types.StringTypes):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1151 args = [args]
40244 a72d970c384b Bug #1357915: allow all sequence types for shell arguments in Georg Brandl <georg@python.org> parents: 39793 diff changeset	1152 else:
a72d970c384b Bug #1357915: allow all sequence types for shell arguments in Georg Brandl <georg@python.org> parents: 39793 diff changeset	1153 args = list(args)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1154
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1155 if shell:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1156 args = ["/bin/sh", "-c"] + args
63097 3fdd9b43024c Merged revisions 82973 via svnmerge from Stefan Krah <stefan@bytereef.org> parents: 62403 diff changeset	1157 if executable:
3fdd9b43024c Merged revisions 82973 via svnmerge from Stefan Krah <stefan@bytereef.org> parents: 62403 diff changeset	1158 args[0] = executable
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1159
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1160 if executable is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1161 executable = args[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1162
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1163 # For transferring possible exec failure from child to parent
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1164 # The first char specifies the exception type: 0 means
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1165 # OSError, 1 means some other error.
72076 498b03a55297 Issue #12786: Set communication pipes used by subprocess.Popen CLOEXEC to avoid Charles-François Natali <neologix@free.fr> parents: 71899 diff changeset	1166 errpipe_read, errpipe_write = self.pipe_cloexec()
44799 0ace74767478 backport r60104 + r60111 from trunk. Gregory P. Smith <greg@mad-scientist.com> parents: 41688 diff changeset	1167 try:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1168 try:
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1169 gc_was_enabled = gc.isenabled()
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1170 # Disable gc to avoid bug where gc -> file_dealloc ->
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1171 # write to stderr -> hang. http://bugs.python.org/issue1336
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1172 gc.disable()
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1173 try:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1174 self.pid = os.fork()
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1175 except:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1176 if gc_was_enabled:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1177 gc.enable()
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1178 raise
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1179 self._child_created = True
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1180 if self.pid == 0:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1181 # Child
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1182 try:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1183 # Close parent's pipe ends
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1184 if p2cwrite is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1185 os.close(p2cwrite)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1186 if c2pread is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1187 os.close(c2pread)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1188 if errread is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1189 os.close(errread)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1190 os.close(errpipe_read)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1191
71530 6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1192 # When duping fds, if there arises a situation
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1193 # where one of the fds is either 0, 1 or 2, it
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1194 # is possible that it is overwritten (#12607).
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1195 if c2pwrite == 0:
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1196 c2pwrite = os.dup(c2pwrite)
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1197 if errwrite == 0 or errwrite == 1:
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1198 errwrite = os.dup(errwrite)
6119440bae30 Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is Ross Lagerwall <rosslagerwall@gmail.com> parents: 71230 diff changeset	1199
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1200 # Dup fds for child
67312 a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1201 def _dup2(a, b):
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1202 # dup2() removes the CLOEXEC flag but
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1203 # we must do it ourselves if dup2()
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1204 # would be a no-op (issue #10806).
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1205 if a == b:
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1206 self._set_cloexec_flag(a, False)
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1207 elif a is not None:
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1208 os.dup2(a, b)
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1209 _dup2(p2cread, 0)
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1210 _dup2(c2pwrite, 1)
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1211 _dup2(errwrite, 2)
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1212
67312 a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1213 # Close pipe fds. Make sure we don't close the
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1214 # same fd more than once, or standard fds.
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1215 closed = { None }
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1216 for fd in [p2cread, c2pwrite, errwrite]:
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1217 if fd not in closed and fd > 2:
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1218 os.close(fd)
a476eb087ee9 Merged revisions 87695 via svnmerge from Antoine Pitrou <solipsis@pitrou.net> parents: 66894 diff changeset	1219 closed.add(fd)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1220
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1221 # Close all other fds, if asked for
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1222 if close_fds:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1223 self._close_fds(but=errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1224
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1225 if cwd is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1226 os.chdir(cwd)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1227
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1228 if preexec_fn:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1229 preexec_fn()
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1230
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1231 if env is None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1232 os.execvp(executable, args)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1233 else:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1234 os.execvpe(executable, args, env)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1235
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1236 except:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1237 exc_type, exc_value, tb = sys.exc_info()
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1238 # Save the traceback and attach it to the exception object
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1239 exc_lines = traceback.format_exception(exc_type,
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1240 exc_value,
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1241 tb)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1242 exc_value.child_traceback = ''.join(exc_lines)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1243 os.write(errpipe_write, pickle.dumps(exc_value))
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1244
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1245 # This exitcode won't be reported to applications, so it
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1246 # really doesn't matter what we return.
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1247 os._exit(255)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1248
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1249 # Parent
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1250 if gc_was_enabled:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1251 gc.enable()
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1252 finally:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1253 # be sure the FD is closed no matter what
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1254 os.close(errpipe_write)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1255
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1256 if p2cread is not None and p2cwrite is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1257 os.close(p2cread)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1258 if c2pwrite is not None and c2pread is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1259 os.close(c2pwrite)
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1260 if errwrite is not None and errread is not None:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1261 os.close(errwrite)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1262
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1263 # Wait for exec to fail or succeed; possibly raising exception
59208 12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	1264 # Exception limited to 1M
12469f20656b Merged revisions 78523 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 57154 diff changeset	1265 data = _eintr_retry_call(os.read, errpipe_read, 1048576)
54796 e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1266 finally:
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1267 # be sure the FD is closed no matter what
e25a4d27c38b Issue #6274. Fixed a potential FD leak in subprocess.py. Facundo Batista <facundobatista@gmail.com> parents: 51986 diff changeset	1268 os.close(errpipe_read)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1269
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1270 if data != "":
66894 072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1271 try:
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1272 _eintr_retry_call(os.waitpid, self.pid, 0)
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1273 except OSError as e:
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1274 if e.errno != errno.ECHILD:
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1275 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1276 child_exception = pickle.loads(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1277 raise child_exception
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1278
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1279
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1280 def _handle_exitstatus(self, sts, _WIFSIGNALED=os.WIFSIGNALED,
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1281 _WTERMSIG=os.WTERMSIG, _WIFEXITED=os.WIFEXITED,
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1282 _WEXITSTATUS=os.WEXITSTATUS):
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1283 # This method is called (indirectly) by __del__, so it cannot
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1284 # refer to anything outside of its local scope."""
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1285 if _WIFSIGNALED(sts):
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1286 self.returncode = -_WTERMSIG(sts)
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1287 elif _WIFEXITED(sts):
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1288 self.returncode = _WEXITSTATUS(sts)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1289 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1290 # Should never happen
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1291 raise RuntimeError("Unknown child exit status!")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1292
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1293
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1294 def _internal_poll(self, _deadstate=None, _waitpid=os.waitpid,
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1295 _WNOHANG=os.WNOHANG, _os_error=os.error):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1296 """Check if child process has terminated. Returns returncode
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1297 attribute.
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1298
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1299 This method is called by __del__, so it cannot reference anything
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1300 outside of the local scope (nor can any methods it calls).
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1301
2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1302 """
34575 4545a154fac1 Patch from Leandro Lucarella: replaced: Peter Astrand <astrand@lysator.liu.se> parents: 34551 diff changeset	1303 if self.returncode is None:
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1304 try:
61568 2622796aeca9 Merged revisions 81154 via svnmerge from Brett Cannon <bcannon@gmail.com> parents: 60921 diff changeset	1305 pid, sts = _waitpid(self.pid, _WNOHANG)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1306 if pid == self.pid:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1307 self._handle_exitstatus(sts)
79274 53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1308 except _os_error as e:
37563 42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	1309 if _deadstate is not None:
42023f5b7d6d Patch #1467770: Add Popen objects to _active only in __del__. Martin v. Löwis <martin@v.loewis.de> parents: 35633 diff changeset	1310 self.returncode = _deadstate
79274 53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1311 if e.errno == errno.ECHILD:
53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1312 # This happens if SIGCLD is set to be ignored or
53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1313 # waiting for child processes has otherwise been
53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1314 # disabled for our process. This child is dead, we
53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1315 # can't get the status.
53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1316 # http://bugs.python.org/issue15756
53e91fa35f8e Issue #15756: subprocess.poll() now properly handles errno.ECHILD to Gregory P. Smith <greg@krypto.org> parents: 75526 diff changeset	1317 self.returncode = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1318 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1319
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1320
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1321 def wait(self):
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1322 """Wait for child process to terminate. Returns returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1323 attribute."""
80367 82711f5ab507 Fixes issue #14396: Handle the odd rare case of waitpid returning 0 Gregory P. Smith <greg@krypto.org> parents: 79274 diff changeset	1324 while self.returncode is None:
66894 072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1325 try:
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1326 pid, sts = _eintr_retry_call(os.waitpid, self.pid, 0)
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1327 except OSError as e:
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1328 if e.errno != errno.ECHILD:
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1329 raise
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1330 # This happens if SIGCLD is set to be ignored or waiting
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1331 # for child processes has otherwise been disabled for our
072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1332 # process. This child is dead, we can't get the status.
80367 82711f5ab507 Fixes issue #14396: Handle the odd rare case of waitpid returning 0 Gregory P. Smith <greg@krypto.org> parents: 79274 diff changeset	1333 pid = self.pid
66894 072ee3f743c2 Merged revisions 87233 via svnmerge from Gregory P. Smith <greg@mad-scientist.com> parents: 64519 diff changeset	1334 sts = 0
80367 82711f5ab507 Fixes issue #14396: Handle the odd rare case of waitpid returning 0 Gregory P. Smith <greg@krypto.org> parents: 79274 diff changeset	1335 # Check the pid and loop as waitpid has been known to return
82711f5ab507 Fixes issue #14396: Handle the odd rare case of waitpid returning 0 Gregory P. Smith <greg@krypto.org> parents: 79274 diff changeset	1336 # 0 even without WNOHANG in odd situations. issue14396.
82711f5ab507 Fixes issue #14396: Handle the odd rare case of waitpid returning 0 Gregory P. Smith <greg@krypto.org> parents: 79274 diff changeset	1337 if pid == self.pid:
82711f5ab507 Fixes issue #14396: Handle the odd rare case of waitpid returning 0 Gregory P. Smith <greg@krypto.org> parents: 79274 diff changeset	1338 self._handle_exitstatus(sts)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1339 return self.returncode
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1340
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1341
34672 085bc27f92b7 Optimization for communicate(): If only one of stdin/stdout/stderr is Peter Astrand <astrand@lysator.liu.se> parents: 34624 diff changeset	1342 def _communicate(self, input):
55092 9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1343 if self.stdin:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1344 # Flush stdio buffer. This might block, if the user has
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1345 # been writing to .stdin in an uncontrolled fashion.
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1346 self.stdin.flush()
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1347 if not input:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1348 self.stdin.close()
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1349
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1350 if _has_poll:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1351 stdout, stderr = self._communicate_with_poll(input)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1352 else:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1353 stdout, stderr = self._communicate_with_select(input)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1354
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1355 # All data exchanged. Translate lists into strings.
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1356 if stdout is not None:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1357 stdout = ''.join(stdout)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1358 if stderr is not None:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1359 stderr = ''.join(stderr)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1360
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1361 # Translate newlines, if requested. We cannot let the file
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1362 # object do the translation: It is based on stdio, which is
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1363 # impossible to combine with select (unless forcing no
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1364 # buffering).
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1365 if self.universal_newlines and hasattr(file, 'newlines'):
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1366 if stdout:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1367 stdout = self._translate_newlines(stdout)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1368 if stderr:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1369 stderr = self._translate_newlines(stderr)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1370
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1371 self.wait()
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1372 return (stdout, stderr)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1373
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1374
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1375 def _communicate_with_poll(self, input):
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1376 stdout = None # Return
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1377 stderr = None # Return
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1378 fd2file = {}
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1379 fd2output = {}
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1380
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1381 poller = select.poll()
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1382 def register_and_append(file_obj, eventmask):
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1383 poller.register(file_obj.fileno(), eventmask)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1384 fd2file[file_obj.fileno()] = file_obj
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1385
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1386 def close_unregister_and_remove(fd):
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1387 poller.unregister(fd)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1388 fd2file[fd].close()
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1389 fd2file.pop(fd)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1390
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1391 if self.stdin and input:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1392 register_and_append(self.stdin, select.POLLOUT)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1393
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1394 select_POLLIN_POLLPRI = select.POLLIN \| select.POLLPRI
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1395 if self.stdout:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1396 register_and_append(self.stdout, select_POLLIN_POLLPRI)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1397 fd2output[self.stdout.fileno()] = stdout = []
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1398 if self.stderr:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1399 register_and_append(self.stderr, select_POLLIN_POLLPRI)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1400 fd2output[self.stderr.fileno()] = stderr = []
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1401
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1402 input_offset = 0
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1403 while fd2file:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1404 try:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1405 ready = poller.poll()
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1406 except select.error, e:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1407 if e.args[0] == errno.EINTR:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1408 continue
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1409 raise
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1410
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1411 for fd, mode in ready:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1412 if mode & select.POLLOUT:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1413 chunk = input[input_offset : input_offset + _PIPE_BUF]
69153 c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1414 try:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1415 input_offset += os.write(fd, chunk)
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1416 except OSError as e:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1417 if e.errno == errno.EPIPE:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1418 close_unregister_and_remove(fd)
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1419 else:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1420 raise
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1421 else:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1422 if input_offset >= len(input):
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1423 close_unregister_and_remove(fd)
55092 9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1424 elif mode & select_POLLIN_POLLPRI:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1425 data = os.read(fd, 4096)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1426 if not data:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1427 close_unregister_and_remove(fd)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1428 fd2output[fd].append(data)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1429 else:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1430 # Ignore hang up or errors.
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1431 close_unregister_and_remove(fd)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1432
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1433 return (stdout, stderr)
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1434
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1435
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1436 def _communicate_with_select(self, input):
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1437 read_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1438 write_set = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1439 stdout = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1440 stderr = None # Return
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1441
55092 9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1442 if self.stdin and input:
9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1443 write_set.append(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1444 if self.stdout:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1445 read_set.append(self.stdout)
33731 53c468d0955b Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 33727 diff changeset	1446 stdout = []
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1447 if self.stderr:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1448 read_set.append(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1449 stderr = []
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1450
40686 666faf8912e0 Avoid O(N*2) bottleneck in _communicate_(). Fixes #1598181. Backport from rev. 53295. Peter Astrand <astrand@lysator.liu.se>* parents: 40620 diff changeset	1451 input_offset = 0
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1452 while read_set or write_set:
48163 641edee4fcb1 (backport from trunk r64756) Gregory P. Smith <greg@mad-scientist.com> parents: 48155 diff changeset	1453 try:
641edee4fcb1 (backport from trunk r64756) Gregory P. Smith <greg@mad-scientist.com> parents: 48155 diff changeset	1454 rlist, wlist, xlist = select.select(read_set, write_set, [])
641edee4fcb1 (backport from trunk r64756) Gregory P. Smith <greg@mad-scientist.com> parents: 48155 diff changeset	1455 except select.error, e:
641edee4fcb1 (backport from trunk r64756) Gregory P. Smith <greg@mad-scientist.com> parents: 48155 diff changeset	1456 if e.args[0] == errno.EINTR:
641edee4fcb1 (backport from trunk r64756) Gregory P. Smith <greg@mad-scientist.com> parents: 48155 diff changeset	1457 continue
641edee4fcb1 (backport from trunk r64756) Gregory P. Smith <greg@mad-scientist.com> parents: 48155 diff changeset	1458 raise
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1459
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1460 if self.stdin in wlist:
55092 9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1461 chunk = input[input_offset : input_offset + _PIPE_BUF]
69153 c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1462 try:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1463 bytes_written = os.write(self.stdin.fileno(), chunk)
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1464 except OSError as e:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1465 if e.errno == errno.EPIPE:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1466 self.stdin.close()
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1467 write_set.remove(self.stdin)
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1468 else:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1469 raise
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1470 else:
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1471 input_offset += bytes_written
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1472 if input_offset >= len(input):
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1473 self.stdin.close()
c10d55c51d81 Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. Ross Lagerwall <rosslagerwall@gmail.com> parents: 68588 diff changeset	1474 write_set.remove(self.stdin)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1475
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1476 if self.stdout in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1477 data = os.read(self.stdout.fileno(), 1024)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1478 if data == "":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1479 self.stdout.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1480 read_set.remove(self.stdout)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1481 stdout.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1482
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1483 if self.stderr in rlist:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1484 data = os.read(self.stderr.fileno(), 1024)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1485 if data == "":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1486 self.stderr.close()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1487 read_set.remove(self.stderr)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1488 stderr.append(data)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1489
55092 9808e38fde72 Use select.poll() in subprocess, when available, rather than select() so that Gregory P. Smith <greg@mad-scientist.com> parents: 54795 diff changeset	1490 return (stdout, stderr)
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1491
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1492
46479 e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1493 def send_signal(self, sig):
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1494 """Send a signal to the process
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1495 """
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1496 os.kill(self.pid, sig)
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1497
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1498 def terminate(self):
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1499 """Terminate the process with SIGTERM
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1500 """
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1501 self.send_signal(signal.SIGTERM)
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1502
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1503 def kill(self):
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1504 """Kill the process with SIGKILL
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1505 """
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1506 self.send_signal(signal.SIGKILL)
e16593da4898 Added kill, terminate and send_signal to subprocess.Popen Christian Heimes <christian@cheimes.de> parents: 44801 diff changeset	1507
33723 76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1508
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1509 def _demo_posix():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1510 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1511 # Example 1: Simple redirection: Get process list
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1512 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1513 plist = Popen(["ps"], stdout=PIPE).communicate()[0]
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1514 print "Process list:"
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1515 print plist
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1516
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1517 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1518 # Example 2: Change uid before executing child
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1519 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1520 if os.getuid() == 0:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1521 p = Popen(["id"], preexec_fn=lambda: os.setuid(100))
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1522 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1523
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1524 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1525 # Example 3: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1526 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1527 print "Looking for 'hda'..."
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1528 p1 = Popen(["dmesg"], stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1529 p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1530 print repr(p2.communicate()[0])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1531
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1532 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1533 # Example 4: Catch execution error
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1534 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1535 print
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1536 print "Trying a weird file..."
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1537 try:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1538 print Popen(["/this/path/does/not/exist"]).communicate()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1539 except OSError, e:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1540 if e.errno == errno.ENOENT:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1541 print "The file didn't exist. I thought so..."
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1542 print "Child traceback:"
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1543 print e.child_traceback
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1544 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1545 print "Error", e.errno
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1546 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1547 print >>sys.stderr, "Gosh. No error."
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1548
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1549
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1550 def _demo_windows():
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1551 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1552 # Example 1: Connecting several subprocesses
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1553 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1554 print "Looking for 'PROMPT' in set output..."
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1555 p1 = Popen("set", stdout=PIPE, shell=True)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1556 p2 = Popen('find "PROMPT"', stdin=p1.stdout, stdout=PIPE)
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1557 print repr(p2.communicate()[0])
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1558
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1559 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1560 # Example 2: Simple execution of program
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1561 #
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1562 print "Executing calc..."
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1563 p = Popen("calc")
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1564 p.wait()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1565
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1566
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1567 if __name__ == "__main__":
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1568 if mswindows:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1569 _demo_windows()
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1570 else:
76641824cf05 Added Peter Astrand's subprocess module. Fredrik Lundh <fredrik@pythonware.com> parents: diff changeset	1571 _demo_posix()

Mercurial > cpython-lru_cache-weakref

annotate Lib/subprocess.py @ 80661:94de77bd0b4b 2.7