Fix typing

pydata · Mar 9, 2023 · 3f4dde2 · 3f4dde2
1 parent 58e247e
commit 3f4dde2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/xarray/core/groupby.py b/xarray/core/groupby.py
@@ -479,7 +479,7 @@ def __init__(
                 "dimension"
             )
 
-        self._codes: DataArray = None
+        self._codes: DataArray
         if grouper is not None:
             unique_coord, group_indices, codes, full_index = _factorize_grouper(
                 group, grouper