save project

diy2.py

+username = "赵老师最帅"
+userpassword = "对对对"
+while True:
+    name = input("请输入用户名称")
+    password = input("请输入密码")
+    if name == username and password ==userpassword:
+        print("登陆成功")
+        break
+    if name != username:
+        print("用户名不存在，请重新登录")
+    if password != userpassword:
+        print("密码错误，请重新登录")
+print("欢迎来到德莱联盟")
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