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-rw-r--r--taskflow/engines/action_engine/completer.py4
1 files changed, 1 insertions, 3 deletions
diff --git a/taskflow/engines/action_engine/completer.py b/taskflow/engines/action_engine/completer.py
index 59a2dbf..028b64a 100644
--- a/taskflow/engines/action_engine/completer.py
+++ b/taskflow/engines/action_engine/completer.py
@@ -19,7 +19,6 @@ import weakref
from oslo_utils import reflection
from oslo_utils import strutils
-import six
from taskflow.engines.action_engine import compiler as co
from taskflow.engines.action_engine import executor as ex
@@ -30,8 +29,7 @@ from taskflow import states as st
LOG = logging.getLogger(__name__)
-@six.add_metaclass(abc.ABCMeta)
-class Strategy(object):
+class Strategy(object, metaclass=abc.ABCMeta):
"""Failure resolution strategy base class."""
strategy = None