save project

diy2.py

@@ -5,5 +5,11 @@ 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")
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+        break
+    if name!=username:
+        print("账号输入错误")
+    if password!=userpassword:
+        print("密码输入错误")   
+print("欢迎来到贝尔编程!")
+    
+    
\ No newline at end of file