code: def IS(instance, other):  # noqa
      
      try:
          instance = instance._redpipe_future_result  # noqa
      except AttributeError:
          pass
  
      try:
          other = other._redpipe_future_result
      except AttributeError:
          pass
  
      return instance is other
docs: Support the `future is other` use-case.
      Can't override the language so we built a function.
      Will work on non-future objects too.
  
      :param instance: future or any python object
      :param other: object to compare.
      :return: