# HG changeset patch
# User Amine Sehili <amine.sehili@gmail.com>
# Date 1570561294 -3600
# Node ID d5cbf4fc1416d83072acba7fd3638ac75bd31751
# Parent  7259b1eb9329457167a17e972c5305567b6bdfeb
Use python 3 syntax for ABCMeta in DataValidator

diff -r 7259b1eb9329 -r d5cbf4fc1416 auditok/util.py
--- a/auditok/util.py	Tue Oct 08 19:48:13 2019 +0100
+++ b/auditok/util.py	Tue Oct 08 20:01:34 2019 +0100
@@ -99,15 +99,12 @@
         """
 
 
-class DataValidator:
+class DataValidator(metaclass=ABCMeta):
     """
     Base class for a validator object used by :class:`.core.StreamTokenizer` to check
     if read data is valid.
     Subclasses should implement :func:`is_valid` method.
-    """
-
-    __metaclass__ = ABCMeta
-
+   """
     @abstractmethod
     def is_valid(self, data):
         """