Fix attribute error bug in notify_axes_change.

pearu · pearu · commit 3fca6c1b4ae5 · 2011-08-09T11:35:40.000+03:00
diff --git a/lib/matplotlib/backends/backend_gtk.py b/lib/matplotlib/backends/backend_gtk.py
@@ -541,7 +541,8 @@ def destroy(*args):
 
         def notify_axes_change(fig):
             'this will be called whenever the current axes is changed'
-            if self.toolbar is not None: self.toolbar.update()
+            if getattr(self, 'toolbar', None) is not None:
+                self.toolbar.update()
         self.canvas.figure.add_axobserver(notify_axes_change)
 
         self.canvas.grab_focus()
