old_contents: """
      pies/_utils.py
  
      Utils internal to the pies library and not meant for direct external usage.
  
      Copyright (C) 2013  Timothy Edmund Crosley
  
      Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
      documentation files (the "Software"), to deal in the Software without restriction, including without limitation
      the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
      to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  
      The above copyright notice and this permission notice shall be included in all copies or
      substantial portions of the Software.
  
      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
      TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
      CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
      OTHER DEALINGS IN THE SOFTWARE.
  """
  
  
  def with_metaclass(meta, *bases):
      """
          Enables use of meta classes across Python Versions.
          taken from jinja2/_compat.py
  
          Use it like this::
  
              class BaseForm(object):
                  pass
  
              class FormType(type):
                  pass
  
              class Form(with_metaclass(FormType, BaseForm)):
                  pass
      """
      class metaclass(meta):
          __call__ = type.__call__
          __init__ = type.__init__
          def __new__(cls, name, this_bases, d):
              if this_bases is None:
                  return type.__new__(cls, name, (), d)
              return meta(name, bases, d)
      return metaclass('temporary_class', None, {})
  
  
  def unmodified_isinstance(*bases):
      """
          When called in the form MyOverrideClass(unmodified_isinstance(BuiltInClass))
  
          it allows calls against passed in built in instances to pass even if there not a subclass
      """
      class UnmodifiedIsInstance(type):
          def __instancecheck__(cls, instance):
              if cls.__name__ in (str(base.__name__) for base in bases):
                  return isinstance(instance, bases)
              return type.__instancecheck__(cls, instance)
  
              return isinstance(instance, bases)
  
      return with_metaclass(UnmodifiedIsInstance, *bases)
  
new_contents: """
      pies/_utils.py
  
      Utils internal to the pies library and not meant for direct external usage.
  
      Copyright (C) 2013  Timothy Edmund Crosley
  
      Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
      documentation files (the "Software"), to deal in the Software without restriction, including without limitation
      the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
      to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  
      The above copyright notice and this permission notice shall be included in all copies or
      substantial portions of the Software.
  
      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
      TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
      CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
      OTHER DEALINGS IN THE SOFTWARE.
  """
  
  
  def with_metaclass(meta, *bases):
      """
          Enables use of meta classes across Python Versions.
          taken from jinja2/_compat.py
  
          Use it like this::
  
              class BaseForm(object):
                  pass
  
              class FormType(type):
                  pass
  
              class Form(with_metaclass(FormType, BaseForm)):
                  pass
      """
      class metaclass(meta):
          __call__ = type.__call__
          __init__ = type.__init__
          def __new__(cls, name, this_bases, d):
              if this_bases is None:
                  return type.__new__(cls, name, (), d)
              return meta(name, bases, d)
      return metaclass('temporary_class', None, {})
  
  
  def unmodified_isinstance(*bases):
      """
          When called in the form MyOverrideClass(unmodified_isinstance(BuiltInClass))
  
          it allows calls against passed in built in instances to pass even if there not a subclass
      """
      class UnmodifiedIsInstance(type):
          @classmethod
          def __instancecheck__(cls, instance):
              if cls.__name__ in (str(base.__name__) for base in bases):
                  return isinstance(instance, bases)
              return type.__instancecheck__(cls, instance)
  
      return with_metaclass(UnmodifiedIsInstance, *bases)
  
subject: Fix instance check, on some versions of Python