在Python語言中，json數據與dict字典以及對象之間的轉化，是必不可少的操作。

在Python中自帶json庫。通過import json導入。

在json模塊有2個方法，

loads()：將json數據轉化成dict數據

dumps()：將dict數據轉化成json數據

load()：讀取json文件數據，轉成dict數據

dump()：將dict數據轉化成json數據后寫入json文件

下面是具體的示例：

dict字典轉json數據

import jsondef dict_to_json(): dict = {} dict['name'] = 'many' dict['age'] = 10 dict['sex'] = 'male' print(dict) # 輸出：{'name': 'many', 'age': 10, 'sex': 'male'} j = json.dumps(dict) print(j) # 輸出：{"name": "many", "age": 10, "sex": "male"}if __name__ == '__main__': dict_to_json()

對象轉json數據

import jsondef obj_to_json(): stu = Student('007', '007', 28, 'male', '13000000000', '123@qq.com') print(type(stu)) # <class 'json_test.student.Student'> stu = stu.__dict__ # 將對象轉成dict字典 print(type(stu)) # <class 'dict'> print(stu) # {'id': '007', 'name': '007', 'age': 28, 'sex': 'male', 'phone': '13000000000', 'email': '123@qq.com'} j = json.dumps(obj=stu) print(j) # {"id": "007", "name": "007", "age": 28, "sex": "male", "phone": "13000000000", "email": "123@qq.com"}if __name__ == '__main__': obj_to_json()

json數據轉成dict字典

import jsondef json_to_dict(): j = '{"id": "007", "name": "007", "age": 28, "sex": "male", "phone": "13000000000", "email": "123@qq.com"}' dict = json.loads(s=j) print(dict) # {'id': '007', 'name': '007', 'age': 28, 'sex': 'male', 'phone': '13000000000', 'email': '123@qq.com'}if __name__ == '__main__': json_to_dict()

json數據轉成對象

import jsondef json_to_obj(): j = '{"id": "007", "name": "007", "age": 28, "sex": "male", "phone": "13000000000", "email": "123@qq.com"}' dict = json.loads(s=j) stu = Student() stu.__dict__ = dict print('id: ' + stu.id + ' name: ' + stu.name + ' age: ' + str(stu.age) + ' sex: ' + str( stu.sex) + ' phone: ' + stu.phone + ' email: ' + stu.email) # id: 007 name: 007 age: 28 sex: male phone: 13000000000 email: 123@qq.comif __name__ == '__main__': json_to_obj()

json的load()與dump()方法的使用

dump()方法的使用

import jsondef dict_to_json_write_file(): dict = {} dict['name'] = 'many' dict['age'] = 10 dict['sex'] = 'male' print(dict) # {'name': 'many', 'age': 10, 'sex': 'male'} with open('1.json', 'w') as f: json.dump(dict, f) # 會在目錄下生成一個1.json的文件，文件內容是dict數據轉成的json數據if __name__ == '__main__': dict_to_json_write_file()

load()的使用

import jsondef json_file_to_dict(): with open('1.json', 'r') as f: dict = json.load(fp=f) print(dict) # {'name': 'many', 'age': 10, 'sex': 'male'}if __name__ == '__main__': json_file_to_dict()