FIX: legend crashes when bar chart is empty with label

choyiny · choyiny · commit 39ae61ad695f · 2019-02-28T17:56:52.000-05:00
diff --git a/lib/matplotlib/legend_handler.py b/lib/matplotlib/legend_handler.py
@@ -35,7 +35,9 @@ def legend_artist(self, legend, orig_handle, fontsize, handlebox)
 
 
 def update_from_first_child(tgt, src):
-    tgt.update_from(src.get_children()[0])
+    first_child = next(iter(src.get_children()), None)
+    if first_child is not None:
+        tgt.update_from(first_child)
 
 
 class HandlerBase(object):
