save project

diy2.py

@@ -6,6 +6,10 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    else:
-        print("用户名和密码错误!请重新输入")
+    if name != username and password != userpassword:
+        print("用户名和密码输入错误，请重新输入")
+    elif name != username:
+        print("用户名输入错误!请重新输入")
+    elif password !=userpassword:
+        print("密码输入错误!请重新输入")
 print("欢迎来到贝尔编程!")
\ No newline at end of file