auto save

diy2.py

-y = "python"
-f = "123456"
-while True:
-    y2 = input("请输入用户名:")
-    f2 = input("请输入密码:")
-    if y == y2 and f == f2:
-        print("登录成功!")
-        break
-    print("你输入错误了")
-    if y != y2:
-        print("你用户名输错了")
-    if f != f2:
-        print("你密码输错了")
-print("欢迎来到编程世界)
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+z = ""
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