code: def __init__(self, data):
      UserDict.__init__(self)
      self.data = data
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import sys
  from abc import ABCMeta
label_desc: Use image node_id 1 to create a new MappingProxyType object from inherited base classes: UserDict with example: obj = MappingProxyType(data)