save project

diy1.py

@@ -8,6 +8,10 @@ while True:
     if a==username and b==userpassword:
         print("登录成功")
         break
-    print("账号或密码错误")
+    elif a==username:
+       print("账号错误")
+       continue
+    else:
+        print("密码错误")
 print("欢迎")
 # 如果用户输入的账号、密码正确，提示登陆成功
\ No newline at end of file