save project

diy2.py

@@ -6,6 +6,8 @@ while True:
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登录成功!")
         print("登录成功!")
         break
         break
+    elif input_name l=username:
+        print("请输入正确的用户名")
     else:
     else:
         print("用户名和密码错误!请重新输入")
         print("用户名和密码错误!请重新输入")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file