Deprecation notice

scottshambaugh · scottshambaugh · commit 610f7b9c8b0d · 2026-03-10T12:22:33.000-06:00
diff --git a/doc/api/next_api_changes/deprecations/31248-SS.rst b/doc/api/next_api_changes/deprecations/31248-SS.rst
@@ -0,0 +1,7 @@
+Arbitrary code in ``axes.prop_cycle`` rcParam strings
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The ``axes.prop_cycle`` rcParam previously accepted arbitrary Python
+expressions by passing the string to ``eval()``. This is deprecated immediately
+without replacement for security reasons. The previously documented cycler
+operations at https://matplotlib.org/cycler/ are still supported.
