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持续更新中
感受python的强大之case列举：

1. 生成的map list要经过json格式化写入文件，请用python实现这一需求

import json
map={"name": "张三", "age": 18, "address": "北京"}
list=[]
for i in range(3):list.append(map)with open('output.json','w', encoding='utf-8') as fp:json.dump(list, fp, ensure_ascii=False, indent=4)

生成文件如下

[{"name": "张三","age": 18,"address": "北京"},{"name": "张三","age": 18,"address": "北京"},{"name": "张三","age": 18,"address": "北京"}
]

json.dump不带indent=4 则生成一行内容：

[{"name": "张三", "age": 18, "address": "北京"}, {"name": "张三", "age": 18, "address": "北京"}, {"name": "张三", "age": 18, "address": "北京"}]