save project

diy2.py

@@ -6,8 +6,8 @@ while True:
     if name == username and password == userpassword:
         print("登录成功!")
         break
-    if username != username:
+    if username != name:
         print("用户名错误!请重新输入")
-    if userpassword!=userpassword:
+    if userpassword!=password:
         print("密码错误！请重新输入")
 print("欢迎来到贝尔编程!")