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

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

Author: pre-commit-ci[bot]

flox/core.py

@@ -385,7 +385,9 @@ def offset_labels(labels: np.ndarray, ngroups: int) -> tuple[np.ndarray, int]:
     return offset, size
 
 
-def factorize_(by: tuple, axis, expected_groups: tuple[pd.Index, ...] = None, reindex=False, fastpath=False):
+def factorize_(
+    by: tuple, axis, expected_groups: tuple[pd.Index, ...] = None, reindex=False, fastpath=False
+):
     if not isinstance(by, tuple):
         raise ValueError(f"Expected `by` to be a tuple. Received {type(by)} instead")