Some minor optimizations

alanlau28 · alanlau28 · commit b3ac14ca398e · 2023-12-11T12:21:10.000-05:00
diff --git a/lib/matplotlib/legend.py b/lib/matplotlib/legend.py
@@ -979,9 +979,8 @@ def _auto_legend_data(self):
                 lines.append(
                     artist.get_transform().transform_path(artist.get_path()))
             elif isinstance(artist, PolyCollection):
-                paths = artist.get_paths()
-                for path in paths:
-                    lines.append(artist.get_transform().transform_path(path))
+                lines.extend(artist.get_transform().transform_path(path)
+                             for path in artist.get_paths())
             elif isinstance(artist, Collection):
                 transform, transOffset, hoffsets, _ = artist._prepare_points()
                 if len(hoffsets):
