Python之dict(或?qū)ο?與json之間的互相轉(zhuǎn)化實(shí)例

更新時(shí)間：2018年06月05日 10:14:33 作者：張行之

今天小編就為大家分享一篇Python之dict(或?qū)ο?與json之間的互相轉(zhuǎn)化實(shí)例，具有很好的參考價(jià)值，希望對(duì)大家有所幫助。一起跟隨小編過(guò)來(lái)看看吧

在Python語(yǔ)言中，json數(shù)據(jù)與dict字典以及對(duì)象之間的轉(zhuǎn)化，是必不可少的操作。

在Python中自帶json庫(kù)。通過(guò)import json導(dǎo)入。

在json模塊有2個(gè)方法，

loads()：將json數(shù)據(jù)轉(zhuǎn)化成dict數(shù)據(jù)

dumps()：將dict數(shù)據(jù)轉(zhuǎn)化成json數(shù)據(jù)

load()：讀取json文件數(shù)據(jù)，轉(zhuǎn)成dict數(shù)據(jù)

dump()：將dict數(shù)據(jù)轉(zhuǎn)化成json數(shù)據(jù)后寫入json文件

下面是具體的示例：

dict字典轉(zhuǎn)json數(shù)據(jù)

import json
def 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(duì)象轉(zhuǎn)json數(shù)據(jù)

import json
def 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(duì)象轉(zhuǎn)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(shù)據(jù)轉(zhuǎn)成dict字典

import json
def 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(shù)據(jù)轉(zhuǎn)成對(duì)象

import json
def 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.com
if __name__ == '__main__':
 json_to_obj()

json的load()與dump()方法的使用

dump()方法的使用

import json
def 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(huì)在目錄下生成一個(gè)1.json的文件，文件內(nèi)容是dict數(shù)據(jù)轉(zhuǎn)成的json數(shù)據(jù)
if __name__ == '__main__':
 dict_to_json_write_file()

load()的使用

import json
def 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()

以上這篇Python之dict(或?qū)ο?與json之間的互相轉(zhuǎn)化實(shí)例就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

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