Python3: absolute import

Author: dkrenn

src/sage/combinat/recognizable_series.py

@@ -66,6 +66,7 @@
 # (at your option) any later version.
 #                  http://www.gnu.org/licenses/
 #*****************************************************************************
+from __future__ import absolute_import
 
 from sage.misc.cachefunc import cached_method
 from sage.misc.superseded import experimental