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-rw-r--r--taskflow/tests/unit/persistence/test_sql_persistence.py5
1 files changed, 2 insertions, 3 deletions
diff --git a/taskflow/tests/unit/persistence/test_sql_persistence.py b/taskflow/tests/unit/persistence/test_sql_persistence.py
index 973bf9f..5a1917c 100644
--- a/taskflow/tests/unit/persistence/test_sql_persistence.py
+++ b/taskflow/tests/unit/persistence/test_sql_persistence.py
@@ -20,7 +20,6 @@ import os
import random
import tempfile
-import six
import testtools
@@ -123,8 +122,8 @@ class SqlitePersistenceTest(test.TestCase, base.PersistenceTestMixin):
self.db_location = None
-@six.add_metaclass(abc.ABCMeta)
-class BackendPersistenceTestMixin(base.PersistenceTestMixin):
+class BackendPersistenceTestMixin(base.PersistenceTestMixin,
+ metaclass=abc.ABCMeta):
"""Specifies a backend type and does required setup and teardown."""
def _get_connection(self):