python 与json 格式互转

1.json.dumps()用于将python类型的数据转成json格式

import json

j = '[{"name":"zhangsan"},{"age":12}]'
content = json.loads(j)
print(content)

2.json.loads()用于将json格式转化为Python格式

p = [{'name': 'zhangsan'}, {'age': 12}]
content=json.dumps(p)
print(type(content))

3.json.dump()和json.load()主要用来读写json文件函数

json_data = '{"login":[{"username":"aa","password":"001"},{"username":"bb","password":"002"}],"register":[{"username":"cc","password":"003"},{"username":"dd","password":"004"}]}'
with open(r"C:\Users\Administrator\Desktop\data_file_3.json","w") as file:
    json.dump(json_data,file)

with open(r"C:\Users\Administrator\Desktop\data_file_3.json","r") as file:

    print(json.load(file))