PERF: Skip kwargs normalization in Artist._cm_set (#31000)

scottshambaugh · timhoffm · web-flow · commit 4e76477b8a08 · 2026-02-03T01:31:04.000+01:00
---------

Co-authored-by: Scott Shambaugh &lt;scottshambaugh@users.noreply.github.com&gt;
Co-authored-by: Tim Hoffmann &lt;2836374+timhoffm@users.noreply.github.com&gt;
diff --git a/lib/matplotlib/artist.py b/lib/matplotlib/artist.py
@@ -1292,14 +1292,17 @@ def set(self, **kwargs):
     @contextlib.contextmanager
     def _cm_set(self, **kwargs):
         """
-        `.Artist.set` context-manager that restores original values at exit.
+        A context manager to temporarily set artist properties.
+
+        In contrast to `.Artist.set` and for performance, this skips the
+        `normalize_kwargs` check.
         """
         orig_vals = {k: getattr(self, f"get_{k}")() for k in kwargs}
         try:
-            self.set(**kwargs)
+            self._internal_update({k: kwargs[k] for k in orig_vals})
             yield
         finally:
-            self.set(**orig_vals)
+            self._internal_update(orig_vals)
 
     def findobj(self, match=None, include_self=True):
         """
