code: def use_pickle():
      """revert to using stdlib pickle
  
      Reverts custom serialization enabled by use_dill|cloudpickle.
      """
      from . import serialize
  
      serialize.pickle = serialize._stdlib_pickle
  
      # restore special function handling
      can_map[FunctionType] = _original_can_map[FunctionType]
  
imports: import copy
  import functools
  import sys
  from types import FunctionType
  from traitlets import import_item
  from traitlets.log import get_logger
  from .None import codeutil
label_desc: Use image node_id 5 for calling a global function with example usage: use_pickle() without return types