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e0 f d& � � YZ1 d' � Z2 d( � Z3 e4 d) k r�e r|e3 � n e2 � n d S(* s� Subprocesses with accessible I/O streams
This module allows you to spawn processes, connect to their
input/output/error pipes, and obtain their return codes.
For a complete description of this module see the Python documentation.
Main API
========
call(...): Runs a command, waits for it to complete, then returns
the return code.
check_call(...): Same as call() but raises CalledProcessError()
if return code is not 0
check_output(...): Same as check_call() but returns the contents of
stdout instead of a return code
Popen(...): A class for flexibly executing a command in a new process
Constants
---------
PIPE: Special value that indicates a pipe should be created
STDOUT: Special value that indicates that stderr should go to stdout
i����Nt win32t CalledProcessErrorc B s# e Z d Z d d � Z d � Z RS( s� This exception is raised when a process run by check_call() or
check_output() returns a non-zero exit status.
Attributes:
cmd, returncode, output
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c O s t | | � j � S( s� Run command with arguments. Wait for command to complete, then
return the returncode attribute.
The arguments are the same as for the Popen constructor. Example:
retcode = call(["ls", "-l"])
( R t wait( t popenargst kwargs( ( s" /usr/lib64/python2.7/subprocess.pyR � s c O sS t | | � } | rO | j d � } | d k r= | d } n t | | � � n d S( sS Run command with arguments. Wait for command to complete. If
the exit code was zero then return, otherwise raise
CalledProcessError. The CalledProcessError object will have the
return code in the returncode attribute.
The arguments are the same as for the Popen constructor. Example:
check_call(["ls", "-l"])
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If the exit code was non-zero it raises a CalledProcessError. The
CalledProcessError object will have the return code in the returncode
attribute and output in the output attribute.
The arguments are the same as for the Popen constructor. Example:
>>> check_output(["ls", "-l", "/dev/null"])
'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
The stdout argument is not allowed as it is used internally.
To capture standard error in the result, use stderr=STDOUT.
>>> check_output(["/bin/sh", "-c",
... "ls -l non_existent_file ; exit 0"],
... stderr=STDOUT)
'ls: non_existent_file: No such file or directory\n'
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Translate a sequence of arguments into a command line
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1) Arguments are delimited by white space, which is either a
space or a tab.
2) A string surrounded by double quotation marks is
interpreted as a single argument, regardless of white space
contained within. A quoted string can be embedded in an
argument.
3) A double quotation mark preceded by a backslash is
interpreted as a literal double quotation mark.
4) Backslashes are interpreted literally, unless they
immediately precede a double quotation mark.
5) If backslashes immediately precede a double quotation mark,
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described in rule 3.
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For a complete description of the arguments see the Python documentation.
Arguments:
args: A string, or a sequence of program arguments.
bufsize: supplied as the buffering argument to the open() function when
creating the stdin/stdout/stderr pipe file objects
executable: A replacement program to execute.
stdin, stdout and stderr: These specify the executed programs' standard
input, standard output and standard error file handles, respectively.
preexec_fn: (POSIX only) An object to be called in the child process
just before the child is executed.
close_fds: Controls closing or inheriting of file descriptors.
shell: If true, the command will be executed through the shell.
cwd: Sets the current directory before the child is executed.
env: Defines the environment variables for the new process.
universal_newlines: If true, use universal line endings for file
objects stdin, stdout and stderr.
startupinfo and creationflags (Windows only)
Attributes:
stdin, stdout, stderr, pid, returncode
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� | | f S| j | � S( sf Interact with process: Send data to stdin. Read data from
stdout and stderr, until end-of-file is reached. Wait for
process to terminate. The optional input argument should be a
string to be sent to the child process, or None, if no data
should be sent to the child.
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c C s� | t j k r | j � ne | t j k rD t j | j t j � n= | t j k rl t j | j t j � n t d j | � � � d S( s) Send a signal to the process
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