Python之dict(或物件)與json之間的互相轉化
原文連結地址:https://blog.csdn.net/qq_33689414/article/details/78307018
Python之dict(或物件)與json之間的互相轉化
在Python語言中,json資料與dict字典以及物件之間的轉化,是必不可少的操作。
在Python中自帶json庫。通過import json匯入。
在json模組有2個方法,
loads():將json資料轉化成dict資料
dumps():將dict資料轉化成json資料
load():讀取json檔案資料,轉成dict資料
dump():將dict資料轉化成json資料後寫入json檔案
下面是具體的示例:
dict字典轉json資料
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()
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物件轉json資料
import json
def obj_to_json():
stu = Student('007', '007', 28, 'male', '13000000000', '[email protected]')
print(type(stu)) # <class 'json_test.student.Student'>
stu = stu.__dict__ # 將物件轉成dict字典
print(type(stu)) # <class 'dict'>
print(stu) # {'id': '007', 'name': '007', 'age': 28, 'sex': 'male', 'phone': '13000000000', 'email': '
j = json.dumps(obj=stu)
print(j) # {"id": "007", "name": "007", "age": 28, "sex": "male", "phone": "13000000000", "email": "[email protected]"}
if __name__ == '__main__':
obj_to_json()
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json資料轉成dict字典
import json
def json_to_dict():
j = '{"id": "007", "name": "007", "age": 28, "sex": "male", "phone": "13000000000", "email": "[email protected]"}'
dict = json.loads(s=j)
print(dict) # {'id': '007', 'name': '007', 'age': 28, 'sex': 'male', 'phone': '13000000000', 'email': '[email protected]'}
if __name__ == '__main__':
json_to_dict()
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json資料轉成物件
import json
def json_to_obj():
j = '{"id": "007", "name": "007", "age": 28, "sex": "male", "phone": "13000000000", "email": "[email protected]"}'
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: [email protected]
if __name__ == '__main__':
json_to_obj()
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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) # 會在目錄下生成一個1.json的檔案,檔案內容是dict資料轉成的json資料
if __name__ == '__main__':
dict_to_json_write_file()
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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()
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