code: def memoize(func):
      """Memoization decorator."""
  
      class Memodict(dict):
          """A memoization decorator dict."""
  
          __slots__ = ()
          __name__ = func.__name__
          __doc__ = func.__doc__
  
          def __call__(self, *args):
              return self[args]
  
          def __missing__(self, args):
              ret = self[args] = func(*args)
              return ret
  
      return Memodict()
  
label_desc: Use image node_id 1 for calling a global function with example usage: memoize(func) and returns: Memodict, self, ret