Merge pull request #12023 from anntzer/wxtimer

QuLogic · web-flow · commit 9ce6fbbab7c4 · 2018-09-05T15:56:48.000-04:00
Fix deprecation check in wx Timer.
diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
@@ -121,7 +121,7 @@ class TimerWx(TimerBase):
     '''
 
     def __init__(self, *args, **kwargs):
-        if isinstance(args[0], wx.EvtHandler):
+        if args and isinstance(args[0], wx.EvtHandler):
             cbook.warn_deprecated(
                 "3.0", "Passing a wx.EvtHandler as first argument to the "
                 "TimerWx constructor is deprecated since %(version)s.")
