code: def is_direct_subclass(class_, of):
      
      ensure_class(class_)
      ensure_class(of)  # TODO(xion): support predicates in addition to classes
  
      return of in class_.__bases__
docs: Check whether given class is a direct subclass of the other.
  
      :param class_: Class to check
      :param of: Superclass to check against
  
      :return: Boolean result of the test
  
      .. versionadded:: 0.0.4