save project

diy1.py

@@ -3,8 +3,11 @@ userpassword = "123456"
 while True:
     name = input("请输入用户名：")
     password = input("请输入密码：")
-    if username == username and userpassword == userpassword:
-        print("登录成功")
+    if name == username and password == userpassword:
+        print("登录成功!")
         break
-    print("用户名和密码错误，请重新输入") 
+    if name != username:
+        print("用户名不存在，请重新输入！")
+    if password != userpassword:
+        print("密码输入有误，请重新输入!")
 print("欢迎来到贝尔编程")  
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