python实现class对象转换成json/字典的方法

本文实例讲述了python实现class对象转换成json字典的方法。分享给大家供大家参考，具体如下：

    # -*- 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)

运行结果如下：

    -----------
    {'age': 20, 'name': 'zhangsan'}
    -----------
    [{'age': 20, 'name': 'zhangsan'}, {'age': 20, 'name': 'zhangsan'}]
    -----------
    {'age': 20, 'name': 'zhangsan'}
    -----------
    [{'age': 20, 'name': 'zhangsan'}, {'age': 20, 'name': 'zhangsan'}]
    [{'age': 10, 'name': 'lisi'}, {'age': 20, 'name': 'zhangsan'}]

希望本文所述对大家Python程序设计有所帮助。