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

add parent to Configurable...

add parent to Configurable this adds the notion of a parent and member config, so the config: c.Foo.Bar.attr = value will only set `Bar.attr = value` for `Bar` instances which are members of `Foo` instances. The mechanism for doing this is ```python f = Foo(config=cfg) f.b = Bar(parent=f) ``` This Instance config has higher priority than plain class config for Bar, but still lower priority than direct keyword arg trait assignment. The main implication this has is to change the standard creation of descendants: ```python self.bar = Bar(config=self.config) ``` into a direct parent expression ```python self.bar = Bar(parent=self) ``` This also means that most Configurables will actually have a handle on their parent object.

Julian Taylor - - Load All Authors

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        Julian Taylor
    
fix argparse version check

              r10136
            
      from IPython.utils.version import check_version

        Thomas Spura
    
Unbundle of all external modules....

              r3408
            
      try:

          import argparse

        MinRK
    
use bundled argparse if system argparse is < 1.1

              r4669
            
          # don't use system argparse if older than 1.1:

        Julian Taylor
    
fix argparse version check

              r10136
            
          if not check_version(argparse.__version__, '1.1'):

        MinRK
    
use bundled argparse if system argparse is < 1.1

              r4669
            
              raise ImportError

          else:

              from argparse import *

              from argparse import SUPPRESS

      except (ImportError, AttributeError):

        Thomas Spura
    
Unbundle of all external modules....

              r3408
            
          from _argparse import *

        Thomas Kluyver
    
Fix up argparse (update bundled version) so IPython starts whether or not argparse is installed system-wide.

              r3456
            
          from _argparse import SUPPRESS

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Julian Taylor fix argparse version check	r10136	from IPython.utils.version import check_version
Thomas Spura Unbundle of all external modules....	r3408	try:
		import argparse
MinRK use bundled argparse if system argparse is < 1.1	r4669	# don't use system argparse if older than 1.1:
Julian Taylor fix argparse version check	r10136	if not check_version(argparse.__version__, '1.1'):
MinRK use bundled argparse if system argparse is < 1.1	r4669	raise ImportError
		else:
		from argparse import *
		from argparse import SUPPRESS
		except (ImportError, AttributeError):
Thomas Spura Unbundle of all external modules....	r3408	from _argparse import *
Thomas Kluyver Fix up argparse (update bundled version) so IPython starts whether or not argparse is installed system-wide.	r3456	from _argparse import SUPPRESS