diff -r 57875cf423c9 -r 2372284d9457 tests/test-cappedreader.py
--- a/tests/test-cappedreader.py	Sat Oct 05 10:29:34 2019 -0400
+++ b/tests/test-cappedreader.py	Sun Oct 06 09:45:02 2019 -0400
@@ -3,9 +3,8 @@
 import io
 import unittest
 
-from mercurial import (
-    util,
-)
+from mercurial import util
+
 
 class CappedReaderTests(unittest.TestCase):
     def testreadfull(self):
@@ -86,6 +85,8 @@
         self.assertEqual(res, b'')
         self.assertEqual(source.tell(), 100)
 
+
 if __name__ == '__main__':
     import silenttestrunner
+
     silenttestrunner.main(__name__)