Move import of traceback to only occur in the event of an exception.

dopplershift · dopplershift · commit ed2767c417f8 · 2010-10-06T16:00:27.000Z
svn path=/trunk/matplotlib/; revision=8729
diff --git a/lib/matplotlib/artist.py b/lib/matplotlib/artist.py
@@ -239,13 +239,13 @@ def hitlist(self, event):
         """
         List the children of the artist which contain the mouse event *event*.
         """
-        import traceback
         L = []
         try:
             hascursor,info = self.contains(event)
             if hascursor:
                 L.append(self)
         except:
+            import traceback
             traceback.print_exc()
             print "while checking",self.__class__
 
