--- a/tests/printrevset.py	Sat Oct 05 10:29:34 2019 -0400
+++ b/tests/printrevset.py	Sun Oct 06 09:45:02 2019 -0400
@@ -1,16 +1,15 @@
 from __future__ import absolute_import
 from mercurial import (
-  cmdutil,
-  commands,
-  extensions,
-  logcmdutil,
-  revsetlang,
-  smartset,
+    cmdutil,
+    commands,
+    extensions,
+    logcmdutil,
+    revsetlang,
+    smartset,
 )
 
-from mercurial.utils import (
-  stringutil,
-)
+from mercurial.utils import stringutil
+
 
 def logrevset(repo, pats, opts):
     revs = logcmdutil._initialrevs(repo, opts)
@@ -19,6 +18,7 @@
     match, pats, slowpath = logcmdutil._makematcher(repo, revs, pats, opts)
     return logcmdutil._makerevset(repo, match, pats, slowpath, opts)
 
+
 def uisetup(ui):
     def printrevset(orig, repo, pats, opts):
         revs, filematcher = orig(repo, pats, opts)
@@ -35,7 +35,14 @@
             ui.write(stringutil.prettyrepr(revs) + b'\n')
             revs = smartset.baseset()  # display no revisions
         return revs, filematcher
+
     extensions.wrapfunction(logcmdutil, 'getrevs', printrevset)
     aliases, entry = cmdutil.findcmd(b'log', commands.table)
-    entry[1].append((b'', b'print-revset', False,
-                     b'print generated revset and exit (DEPRECATED)'))
+    entry[1].append(
+        (
+            b'',
+            b'print-revset',
+            False,
+            b'print generated revset and exit (DEPRECATED)',
+        )
+    )