标签：内容 move pen remove value 方法 utf8 open encoding
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。
标签：内容 move pen remove value 方法 utf8 open encoding
原文地址：http://www.cnblogs.com/uglyliu/p/6052765.html
