auto save

diy2.py

-usename=""
-usepassword=""
-while True:
-    name=input("请输入账号")
-    password=input("请输入密码")
-    if name ==usename and password ==usepassword:
-        print("登录成功")
-        break
-    if name !=usename:
-        print("账号错误")
-        continue
-    if password!=usepassword:
-    print("密码错误")
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