auto save

diy2.py

-username = "python"
-userpassword = "123456"
-while True:
-    name=input("name:")
-    password=input("password:")# 请用input()实现用户输入账号、密码的功能
-    if password==userpassword and name==username:
-        print("Login successful.")
-        break
-    print("Your name or password is wrong，try again.")
-print("Welcome to bellcode!")
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