upstream/ipython Files · IPython/utils/pyfile.py

Major restructuring of magics, breaking them up into separate classes....

Major restructuring of magics, breaking them up into separate classes. This is the first step to get the new magic architecture in place, with a new base class for magic functions. At this point IPython does *not* run, but the changes are extensive enough to warrant intermediate non-working commits.

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             pyfile.py
        
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      """Utilities for working with Python source files.

      Exposes various functions from recent Python standard libraries, along with

      equivalents for older Python versions.

      """

      import os.path

      try:    # Python 3.2

          from imp import source_from_cache, cache_from_source

      except ImportError:

          # Python <= 3.1: .pyc files go next to .py

          def source_from_cache(path):

              basename, ext = os.path.splitext(path)

              if ext not in ('.pyc', '.pyo'):

                  raise ValueError('Not a cached Python file extension', ext)

              # Should we look for .pyw files?

              return basename + '.py'

          def cache_from_source(path, debug_override=None):

              if debug_override is None:

                  debug_override = __debug__

              basename, ext = os.path.splitext(path)

              return basename + '.pyc' if debug_override else '.pyo'

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				"""Utilities for working with Python source files.

				Exposes various functions from recent Python standard libraries, along with
				equivalents for older Python versions.
				"""
				import os.path

				try: # Python 3.2
				from imp import source_from_cache, cache_from_source
				except ImportError:
				# Python <= 3.1: .pyc files go next to .py
				def source_from_cache(path):
				basename, ext = os.path.splitext(path)
				if ext not in ('.pyc', '.pyo'):
				raise ValueError('Not a cached Python file extension', ext)
				# Should we look for .pyw files?
				return basename + '.py'

				def cache_from_source(path, debug_override=None):
				if debug_override is None:
				debug_override = __debug__
				basename, ext = os.path.splitext(path)
				return basename + '.pyc' if debug_override else '.pyo'