class_docstr: Dictionary that remembers insertion order
class_docstr_tok: ["Dictionary","that","remembers","insertion","order"]
code: def __sizeof__(self):
      sizeof = _sys.getsizeof
      n = len(self) + 1  # number of links including root
      size = sizeof(self.__dict__)  # instance dictionary
      size += sizeof(self.__map) * 2  # internal dict and inherited dict
      size += sizeof(self.__hardroot) * n  # link objects
      size += sizeof(self.__root) * n  # proxy objects
      return size
  
imports: from _functools import partial, reduce
  from collections import MutableMapping, namedtuple
  from .reprlib32 import recursive_repr
  from weakref import proxy
  import sys
label_desc: Use image node_id 9 for calling the OrderedDict obj's underlying member method code with example usage: obj.__sizeof__() and returns: size