old_contents: """
  This module is designed to be used as follows::
  
      from __future__ import division, absolute_import, print_function
      from future.common_iterators import *
  
  And then, for example::
  
      for i in range(10**10):
          pass
      
      for (a, b) in zip(range(10**10), range(-10**10, 0)):
          pass
  
  Note that this is standard Python 3 code, plus some imports that do
  nothing on Python 3.
  
  The iterators this brings in are::
  
  - range
  - filter
  - map
  - zip
  
  range is equivalent to xrange on Python 2 by default. As an alternative,
  there is a pure Python backport of Python 3's range iterator available
  with slicing support. To use it, add::
  
      from future.modified_builtins import range
  
  The other iterators (filter, map, zip) are from the itertools module on
  Python 2. Note that these are also available in the ``future_builtins``
  module on Python 2 (but not Python 3).
  """
  
  from __future__ import division, absolute_import, print_function
  
  import inspect
  from . import six
  
  if not six.PY3:
      _oldrange, _oldmap, _oldzip, _oldfilter = range, map, zip, filter
      
      from .six.moves import xrange as range
      from .six.moves import map, zip, filter
  
  
new_contents: """
  This module is designed to be used as follows::
  
      from __future__ import division, absolute_import, print_function
      from future.common_iterators import *
  
  And then, for example::
  
      for i in range(10**10):
          pass
      
      for (a, b) in zip(range(10**10), range(-10**10, 0)):
          pass
  
  Note that this is standard Python 3 code, plus some imports that do
  nothing on Python 3.
  
  The iterators this brings in are::
  
  - range
  - filter
  - map
  - zip
  
  range is equivalent to xrange on Python 2 by default. As an alternative,
  there is a pure Python backport of Python 3's range iterator available
  with slicing support. To use it, add::
  
      from future.modified_builtins import range
  
  The other iterators (filter, map, zip) are from the itertools module on
  Python 2. Note that these are also available in the ``future_builtins``
  module on Python 2 (but not Python 3).
  """
  
  from __future__ import division, absolute_import, print_function
  
  from . import six
  
  if not six.PY3:
      _oldrange, _oldmap, _oldzip, _oldfilter = range, map, zip, filter
  
  from .six.moves import xrange as range
  from .six.moves import map, zip, filter
  
  if six.PY3:
      __all__ = []
      
  
  
subject: Clean up namespace pollution with common_iterators