diff -r 57875cf423c9 -r 2372284d9457 tests/test-revlog-ancestry.py
--- a/tests/test-revlog-ancestry.py	Sat Oct 05 10:29:34 2019 -0400
+++ b/tests/test-revlog-ancestry.py	Sun Oct 06 09:45:02 2019 -0400
@@ -11,9 +11,11 @@
 repo = hg.repository(u, b'test1', create=1)
 os.chdir('test1')
 
+
 def commit(text, time):
     repo.commit(text=text, date=b"%d 0" % time)
 
+
 def addcommit(name, time):
     f = open(name, 'wb')
     f.write(b'%s\n' % name)
@@ -21,12 +23,15 @@
     repo[None].add([name])
     commit(name, time)
 
+
 def update(rev):
     merge.update(repo, rev, branchmerge=False, force=True)
 
+
 def merge_(rev):
     merge.update(repo, rev, branchmerge=True, force=False)
 
+
 if __name__ == '__main__':
     addcommit(b"A", 0)
     addcommit(b"B", 1)