python class对象转换成json/字典

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# -*- encoding: UTF-8 -*-   class Student:     name = ''     age = 0           def __init__(self, name, age):         self.name = name         self.age = age         def convert_to_dict(obj):     '''把Object对象转换成Dict对象'''     dict = {}     dict.update(obj.__dict__)     return dict                   def convert_to_dicts(objs):     '''把对象列表转换为字典列表'''     obj_arr = []           for o in objs:         #把Object对象转换成Dict对象         dict = {}         dict.update(o.__dict__)         obj_arr.append(dict)           return obj_arr               def class_to_dict(obj):     '''把对象(支持单个对象、list、set)转换成字典'''     is_list = obj.__class__ == [].__class__     is_set = obj.__class__ == set().__class__           if is_list or is_set:         obj_arr = []         for o in obj:             #把Object对象转换成Dict对象             dict = {}             dict.update(o.__dict__)             obj_arr.append(dict)         return obj_arr     else:         dict = {}         dict.update(obj.__dict__)         return dict      stu = Student('zhangsan', 20)   print '-----------' print convert_to_dict(stu)    print '-----------' print convert_to_dicts([stu, stu])   print '-----------' print class_to_dict(stu)   print '-----------' print class_to_dict([stu, stu])   stua = Student('zhangsan', 20) stub = Student('lisi', 10)   stu_set = set() stu_set.add(stua) stu_set.add(stub) print class_to_dict(stu_set)