Update to score_family in font_manager.py

chadawagner · chadawagner · commit 673feb09d3fa · 2015-08-06T15:24:43.000-07:00
diff --git a/lib/matplotlib/font_manager.py b/lib/matplotlib/font_manager.py
@@ -1107,6 +1107,8 @@ def score_family(self, families, family2):
         """
         if not isinstance(families, (list, tuple)):
             families = [families]
+        elif len(families) == 0:
+            return 1.0
         family2 = family2.lower()
         step = 1 / len(families)
         for i, family1 in enumerate(families):
