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-rw-r--r--coverage/sqldata.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/coverage/sqldata.py b/coverage/sqldata.py
index d9f8ceaf..e7e941a6 100644
--- a/coverage/sqldata.py
+++ b/coverage/sqldata.py
@@ -884,7 +884,7 @@ class CoverageData(AutoReprMixin):
with con.execute("select id from context where context = ?", (context,)) as cur:
self._query_context_ids = [row[0] for row in cur.fetchall()]
- def set_query_contexts(self, contexts: Sequence[str]) -> None:
+ def set_query_contexts(self, contexts: Optional[Sequence[str]]) -> None:
"""Set a number of contexts for subsequent querying.
The next :meth:`lines`, :meth:`arcs`, or :meth:`contexts_by_lineno`