upstream/ipython Files · IPython/external/argparse/__init__.py

use Popen instead of getstatusoutput to check for libedit....

use Popen instead of getstatusoutput to check for libedit. getstatusoutput uses os.popen, and is vulnerable to EINTR weirdness in environments such as gdb or PyQt. Exponential falloff is also used, to prevent waiting forever or firing requests too fast, though I haven't had it fire more than once after moving to Popen. closes gh-473

Thomas Kluyver - - Load All Authors

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             __init__.py
        
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             / IPython / external / argparse / __init__.py
          
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      try:

          import argparse

          # Workaround an argparse bug, FIXED in argparse 1.1.0

          if 'RawTextHelpFormatterArgumentDefaultsHelpFormatter' in argparse.__all__:

              import itertools

              argparse.__all__ = list(itertools.chain( [i for i in argparse.__all__

                  if i != 'RawTextHelpFormatterArgumentDefaultsHelpFormatter'],

                  ['RawTextHelpFormatter', 'ArgumentDefaultsHelpFormatter']))

          argparse.__all__.append('SUPPRESS')

          from argparse import *

      except ImportError:

          from _argparse import *

          from _argparse import SUPPRESS

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				try:
				import argparse
				# Workaround an argparse bug, FIXED in argparse 1.1.0
				if 'RawTextHelpFormatterArgumentDefaultsHelpFormatter' in argparse.__all__:
				import itertools
				argparse.__all__ = list(itertools.chain( [i for i in argparse.__all__
				if i != 'RawTextHelpFormatterArgumentDefaultsHelpFormatter'],
				['RawTextHelpFormatter', 'ArgumentDefaultsHelpFormatter']))
				argparse.__all__.append('SUPPRESS')
				from argparse import *
				except ImportError:
				from _argparse import *
				from _argparse import SUPPRESS