PRF: trivial speedup

tacaswell · tacaswell · commit b0b49cba0a6b · 2015-06-27T18:12:15.000-04:00
dicts have a len, do not need to get length of the values list/iterator.
diff --git a/lib/matplotlib/_pylab_helpers.py b/lib/matplotlib/_pylab_helpers.py
@@ -114,7 +114,7 @@ def get_num_fig_managers(cls):
         """
         Return the number of figures being managed.
         """
-        return len(cls.figs.values())
+        return len(cls.figs)
 
     @classmethod
     def get_active(cls):
