trivial

distributed/shuffle/_pickle.py

@@ -97,7 +97,7 @@ def unpickle_and_concat_dataframe_shards(
 
     parts = list(unpickle_bytestream(b))
     # [(input_part_id, index, *blocks), ...]
-    parts = sorted(parts, key=first)
+    parts.sort(key=first)
     shards = []
     for _, idx, *blocks in parts:
         axes = [meta.columns, idx]