wrap exceptions in parens

chriddyp · chriddyp · commit 96cf0db8045a · 2015-07-02T16:56:35.000-04:00
diff --git a/plotly/offline/offline.py b/plotly/offline/offline.py
@@ -169,7 +169,7 @@ def plot():
 
 try:
     _init_notebook_mode()
-except PlotlyOfflineNotFound, ImportError:
+except (PlotlyOfflineNotFound, ImportError):
     # No big deal. The user just hasn't called download_plotlyjs yet.
     # Only bubble up the PlotlyOfflineNotFound error when they attempt
     # to create a plot and don't have the source files.
