JSON module dictionary and string conversion

"""
-*- coding:utf-8 -*-
@Time       :2021/6/19 15:35
@AUTHOR     : Vegetable classmate 
@SOFTWARE   :untitled3
"""
a = '{"mobile_phone":"13800010002","pwd":"12345678","sex":null}'     #  Define a string type , And print the comparison 
print(a)

import json    #  Import json modular 
a_dict = json.loads(a)     #  use json.load Convert string to dictionary 
print(a_dict)    #  Print out the dictionary type 

print("**********   Split line   ************")
dict_a = {'mobile_phone': '13800010002', 'pwd': '12345678', 'sex': None}   #  Define a dictionary type , And print out the comparison 
print(dict_a)
b = json.dumps(dict_a,ensure_ascii=False)   #  use json.dumps Convert dictionary to string , Add encoding format 
print(b)

The output is as follows ：