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__init__.py	0 B	-rw-r--r--
subprocess.py	1.53 KB	-rw-r--r--

Code Editor : subprocess.py

"""
A replacement wrapper around the subprocess module, which provides a stub
implementation of subprocess members on Google App Engine
(which are missing in subprocess).

Instead of importing subprocess, other modules should use this as follows:

from matplotlib.compat import subprocess

This module is safe to import from anywhere within matplotlib.
"""
import subprocess
from matplotlib.cbook import warn_deprecated
warn_deprecated(since='3.0',
                name='matplotlib.compat.subprocess',
                alternative='the python 3 standard library '
                            '"subprocess" module',
                obj_type='module')

__all__ = ['Popen', 'PIPE', 'STDOUT', 'check_output', 'CalledProcessError']

if hasattr(subprocess, 'Popen'):
    Popen = subprocess.Popen
    # Assume that it also has the other constants.
    PIPE = subprocess.PIPE
    STDOUT = subprocess.STDOUT
    CalledProcessError = subprocess.CalledProcessError
    check_output = subprocess.check_output
else:
    # In restricted environments (such as Google App Engine), these are
    # non-existent. Replace them with dummy versions that always raise OSError.
    def Popen(*args, **kwargs):
        raise OSError("subprocess.Popen is not supported")

def check_output(*args, **kwargs):
        raise OSError("subprocess.check_output is not supported")
    PIPE = -1
    STDOUT = -2
    # There is no need to catch CalledProcessError. These stubs cannot raise
    # it. None in an except clause will simply not match any exceptions.
    CalledProcessError = None

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Code Editor : subprocess.py