stacked graph attempt / 6

noblogsmv/webapp.py

@@ -56,7 +56,7 @@ def _mk_stats_graph(x=500, y=270):
 
     chart = SimpleLineChart(x, y)
     _mk_stacked_graph(chart, valuelist)
-    chart.set_legend([None] + labels)
+    chart.set_legend([''] + labels)
     return chart.get_url()