save project

diy2.py

@@ -5,5 +5,10 @@ while True:
     password = input("请输入密码:")
     if name == username and password == userpassword:
         print("登录成功!")
-    print("用户名和密码错误!请重新输入")
+        break
+    if name != username: 
+        print("不存在，请重新输入！！！！！！！")
+        continue
+    if  password != userpassword:
+        print("有误，请重新输入！！！！")
 print("欢迎来到贝尔编程!")
\ No newline at end of file