[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

contest/contest/tasks.py

@@ -40,13 +40,15 @@ def auto_save_redis_to_database() -> None:
  # # 从 Redis 获取现有的答案缓存
  cached_answers = cache.get(cache_key, {})
 
- if cached_answers is not None: # 防止未提交的是白卷
+ if cached_answers is not None:  # 防止未提交的是白卷
  for question_id, choice_id in cached_answers.items():
  # Filter out tokens
  if not question_id.startswith("question-"):
  continue
 
- if not isinstance(choice_id, str) or not choice_id.startswith("choice-"):
+ if not isinstance(choice_id, str) or not choice_id.startswith(
+ "choice-"
+ ):
  return
 
  answer: DraftAnswer = get_object_or_404(
@@ -75,4 +77,4 @@ def auto_save_redis_to_database() -> None:
  print(e)
 
  r.delete(key)
- r.delete(':1:' + ddl_key[:-4] + '_json')
+ r.delete(":1:" + ddl_key[:-4] + "_json")