code: def __nice__(self):
      """str: a "nice" summary string describing this module"""
      if hasattr(self, "__len__"):
          # It is a common pattern for objects to use __len__ in __nice__
          # As a convenience we define a default __nice__ for these objects
          return str(len(self))
      else:
          # In all other cases force the subclass to overload __nice__
          raise NotImplementedError(
              f"Define the __nice__ method for {self.__class__!r}"
          )
  
imports: import warnings
label_desc: Use image node_id 1 for calling the NiceRepr obj's underlying member method code with example usage: obj.__nice__() and returns: str