old_contents: # -*- coding: utf-8 -*-
  
  import sys
  from warnings import warn
  
  ModuleType = type(sys)
  
  # todo: only warn once
  
  
  class DeprecatableModule(ModuleType):
      def __init__(self, module):
          name = module.__name__
          super(DeprecatableModule, self).__init__(name=name)
          self.__dict__.update(module.__dict__)
  
      def __getattribute__(self, name):
          get_attribute = super(DeprecatableModule, self).__getattribute__
          try:
              depros = get_attribute('_deprecated_members')
          except AttributeError:
              self._deprecated_members = depros = {}
          ret = get_attribute(name)
          message = depros.get(name)
          if message is not None:
              warn(message, DeprecationWarning, stacklevel=2)
          return ret
  
  
  def deprecate_module_member(mod_name, name, message):
      module = sys.modules[mod_name]
      if not isinstance(module, DeprecatableModule):
          sys.modules[mod_name] = module = DeprecatableModule(module)
      module._deprecated_members[name] = message
      return
  
new_contents: # -*- coding: utf-8 -*-
  """
  Note that DeprecationWarnings are ignored by default in Python
  2.7/3.2+, so be sure to either un-ignore them in your code, or run
  Python with the -Wd flag.
  """
  
  import sys
  from warnings import warn
  
  ModuleType = type(sys)
  
  # todo: only warn once
  
  
  class DeprecatableModule(ModuleType):
      def __init__(self, module):
          name = module.__name__
          super(DeprecatableModule, self).__init__(name=name)
          self.__dict__.update(module.__dict__)
  
      def __getattribute__(self, name):
          get_attribute = super(DeprecatableModule, self).__getattribute__
          try:
              depros = get_attribute('_deprecated_members')
          except AttributeError:
              self._deprecated_members = depros = {}
          ret = get_attribute(name)
          message = depros.get(name)
          if message is not None:
              warn(message, DeprecationWarning, stacklevel=2)
          return ret
  
  
  def deprecate_module_member(mod_name, name, message):
      module = sys.modules[mod_name]
      if not isinstance(module, DeprecatableModule):
          sys.modules[mod_name] = module = DeprecatableModule(module)
      module._deprecated_members[name] = message
      return
  
subject: add note about quiet deprecation warnings