save project

diy1.py

@@ -9,6 +9,8 @@ while True:
     if a==username and b==userpassword:
         print('登录成功')
         break
-    else:
-        print('账号或密码错误')
+    if a != username:
+        print('账号错误')
+    if b != userpassword:
+        print('密码错误')
 print('欢迎来到贝尔编程')
\ No newline at end of file