auto save

1.py

+username="yinuo"
+userpassword="123456"
+while True:
+    name=input("请输入用户名")
+    password=input("请输入密码")
+    if name==username and password==userpassword:
+        print("登陆成功")
+        break
+    elif name!=username:
+        print("请重新输入用户名")
+    else :
+        print("请重新输入密码")
+print("欢迎来到玛酷")