Merge pull request #12631 from meeseeksmachine/auto-backport-of-pr-12630-on-v3.0.x

QuLogic · web-flow · commit 20973849b9c4 · 2018-10-25T18:41:07.000-04:00
Backport PR #12630 on branch v3.0.x (Fix RcParams.__len__)
diff --git a/lib/matplotlib/__init__.py b/lib/matplotlib/__init__.py
@@ -908,6 +908,9 @@ def __iter__(self):
         """Yield sorted list of keys."""
         yield from sorted(dict.__iter__(self))
 
+    def __len__(self):
+        return dict.__len__(self)
+
     def find_all(self, pattern):
         """
         Return the subset of this RcParams dictionary whose keys match,
