Implement black formatting

tests/test_octodns_provider_etc_hosts.py

@@ -2,15 +2,19 @@
 #
 #
 
-from __future__ import absolute_import, division, print_function, \
-    unicode_literals
+from __future__ import (
+    absolute_import,
+    division,
+    print_function,
+    unicode_literals,
+)
 
 from unittest import TestCase
 
 
 class TestEtcHostsShim(TestCase):
-
     def test_missing(self):
         with self.assertRaises(ModuleNotFoundError):
             from octodns.provider.etc_hosts import EtcHostsProvider
+
             EtcHostsProvider