本篇文章给大家带来的内容是关于Python自定义类对象序列化为Json串（代码示例），有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
之前已经实现了Python: Json串反序列化为自定义类对象，这次来实现了Json的序列化。
测试代码和结果如下：
import Json.JsonTool
class Score:
math = 0
chinese = 0
class Book:
name = ''
type = ''
class Student:
id = ''
name = ''
score = Score()
books = [Book()]
student = Student()
json_data = '{"id":"123", "name":"kid", "score":{"math":100, "chinese":98}, ' \
'"books":[{"name":"math", "type":"study"}, ' \
'{"name":"The Little Prince", "type":"literature"}]} '
Json.JsonTool.json_deserialize(json_data, student)
print(student.name)
print(student.score.math)
print(student.books[1].name)
student_str = Json.JsonTool.json_serialize(student)
print(student_str)
input("\n按回车键退出。")运行结果：
立即学习“Python免费学习笔记（深入）”；
kid100The Little Prince
{"books": [{"name": "math", "type": "study"}, {"name": "The Little Prince", "type": "literature"}], "id": "123", "name": "kid", "score": {"chinese": 98, "math": 100}}
按回车键退出。实现代码如下：
def json_serialize(obj):
obj_dic = class2dic(obj)
return json.dumps(obj_dic)
def class2dic(obj):
obj_dic = obj.__dict__
for key in obj_dic.keys():
value = obj_dic[key]
obj_dic[key] = value2py_data(value)
return obj_dic
def value2py_data(value):
if str(type(value)).__contains__('__main__'):
# value 为自定义类
value = class2dic(value)
elif str(type(value)) == "<class 'list'>":
# value 为列表
for index in range(0, value.__len__()):
value[index] = value2py_data(value[index])
return value
