import sys
import time
-import six
from xtesting.core import testcase
__author__ = ("Serena Feng <feng.xiaowei@zte.com.cn>, "
"Cedric Ollivier <cedric.ollivier@orange.com>")
-@six.add_metaclass(abc.ABCMeta)
-class Feature(testcase.TestCase):
+class Feature(testcase.TestCase, metaclass=abc.ABCMeta):
"""Base model for single feature."""
__logger = logging.getLogger(__name__)