import re,os limit = "8000" username = "liuhuihuang" with open("users_dict","r",encoding="utf8") as price_file,open("new_users_dict","w+",encoding="utf8") as write_file: list = json.loads(price_file.read()) if username in list.keys(): list[username]["limit"] = limit write_file.write(json.dumps(list)) os.rename("users_dict","users_dict.bak") os.rename("new_users_dict","users_dict") os.remove("users_dict.bak")
users_dict内容如下:
{"liuhuihuang": {"password": "123456", "username": "liuhuihuang", "limit": "10000", "locked": 0}, "alex": {"password": "123456", "username": "alex", "limit": "20000", "locked": 0}}
该段代码的作用就是把用户名为liuhuihuang的limit值从10000改成8000,我这算是比较笨的方法了,蛋疼。