save project

diy1.py

@@ -8,7 +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
-    else:
+    if name != username:
+        print("用户名不存在！请重新输入")
+    if password != username:
         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")