The Dict (or object) of Python and the conversion of JSON to each other

The Dict (or object) of Python and the conversion of JSON to each other

In the Python language, the conversion between JSON data and dict dictionaries and objects is an essential operation.

Bring your own JSON library in Python. by import json Importing.

There are 2 methods in the JSON module,

• loads(): Convert JSON data to dict data
• dumps(): Convert dict data to JSON data
• load(): Reads JSON file data and turns it into dict data
• dump(): The JSON file is written after converting dict data into JSON data

Here's a concrete example:

Dict Dictionary to JSON data

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

Object Goto JSON data

Import Jsondef Obj_to_json (): Stu = Student (' 007 ',' 007 ',28,' Male ',' 13000000000 ',' [email protected] ')PrintType (stu)) # <class' Json_test.student.Student ' > stu = stu.__dict__ # Convert object to dict dictionaryPrintType (stu)) # <class' Dict ' >Print (stu) # {' ID ':' 007 ',' Name ':' 007 ',' Age ': ' sex ':  ' male ',  ' phone ':  ' 13000000000 ',  ' email ': " [email protected] '} j = Json.dumps (obj=stu) print (j) # {" id ": " 007 ", " name ": " age ": " sex ": " male ", " phone ": " 13000000000 ", " email ": " [email protected] "}if __name__ = =  ' __main__ ': Obj_to_json ()         

JSON data into Dict dictionary

import jsondef 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()

Convert JSON data to objects

import jsondef json_to_obj (): j =  ' ID: ' + stu.id +  ' name: ' + stu.name + 
           
             ' Age: ' + str (stu.age) + 
             ' sex: ' + str (stu.sex) + if __name__ =  ' __main__ ': json_to_obj ()    
                 

JSON's load()And dump()Use of methods

• dump()Use of methods

Import JSONdef dict_to_json_write_file(): Dict = {} dict[' name '] = ' many ' dict[' age '] = 1 0 dict[' sex '] = ' Male ' Print (dict) # {' Name ': ' Many ', ' age ': ten, ' sex ': ' Male '} with open (' 1.json ') , ' W ') as f:json.dump (Dict, F) # will generate a 1.json file in the directory, the file content is dict data into the JSON data if __name__ = = ' __main __ ': Dict_to_json_write_file ()


load()The use

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()

The Dict (or object) of Python and the conversion of JSON to each other