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-rw-r--r--python/sandcrawler/workers.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/python/sandcrawler/workers.py b/python/sandcrawler/workers.py
index 15363ea..356f050 100644
--- a/python/sandcrawler/workers.py
+++ b/python/sandcrawler/workers.py
@@ -108,7 +108,7 @@ class SandcrawlerWorker(object):
"""
return True
- def process(self, task: Any, key: str = None) -> Any:
+ def process(self, task: Any, key: Optional[str] = None) -> Any:
"""
Derived workers need to implement business logic here.