Fix TypeError: __bool__ should return bool, returned int in python3. __bool__ is converted from __nozero__ by 2to3

jenshnielsen · jenshnielsen · commit e247424f4c61 · 2011-11-03T21:25:39.000+01:00
so change this to return bool
diff --git a/lib/matplotlib/markers.py b/lib/matplotlib/markers.py
@@ -121,7 +121,7 @@ def _recache(self):
         self._marker_function()
 
     def __nonzero__(self):
-        return len(self._path.vertices)
+        return bool(len(self._path.vertices))
 
     def is_filled(self):
         return self._filled
