import json
member = {
    "name": "zhangsan",
    "age": 20
}
# python 将JSON 写文件
with open("json.json", "w") as dump_f:
    json.dump(member, dump_f)

# python 从 JSON 文件中读取
with open("json.json", "r") as dump_f:
    load_dict = json.load(dump_f)
    print(load_dict)

打印结果如下

{'name': 'zhangsan', 'age': 20}