fmt

problemset/signals.py

@@ -1,10 +1,12 @@
 # 题单应用信号处理
-from django.db.models.signals import post_save, post_delete
-from django.dispatch import receiver
-from .models import ProblemSetProblem, ProblemSetProgress, ProblemSetBadge, UserBadge
-from django.db import transaction
 import logging
 
+from django.db import transaction
+from django.db.models.signals import post_delete, post_save
+from django.dispatch import receiver
+
+from .models import ProblemSetBadge, ProblemSetProblem, ProblemSetProgress, UserBadge
+
 logger = logging.getLogger(__name__)