auto save

diy1.py

@@ -9,6 +9,9 @@ while True:
     if uname == username and upass == userpassword:
         print("登入成功！")
         break
-    else:
-        print("你的账号或密码错误！")
+    if uname != username:
+        print("账号错误！")
+        continue
+    if upass != userpassword:
+        print("密码错误！")
 print("欢迎回来！")
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