save project

diy1.py

@@ -8,6 +8,9 @@ while True:
     if name == username and password == userpassword:
     if name == username and password == userpassword:
         print("登陆成功")
         print("登陆成功")
         break
         break
+    if name != username:
+        print("用户名不存在,请重新输入!")
+    if password != userpassword:
         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")