A.class SubClass(SuperClass):passB.class SubClass inherits SuperClassC.class SubClass:super(SuperClass)D.class SubClass ->SuperClass
A.json.loads(json_str)B.json.parse(json_str)C.dict.fromJSON(json_str)D.parseJSON(json_str)
A.json.dumps(dict)B.dict.toJSON()C.json.stringify(dict)D.dict.toString()