Fix pre-commit

setup.py

@@ -1,5 +1,3 @@
-from __future__ import print_function
-
 import os.path
 import subprocess
 import tempfile

testing/print_signals.py

@@ -4,8 +4,6 @@
 Since all signals are printed and otherwise ignored, you'll need to send
 SIGKILL (kill -9) to this process to actually end it.
 """
-from __future__ import print_function
-
 import os
 import signal
 import sys

tests/cwd_test.py

@@ -1,9 +1,11 @@
 import os
 import shutil
-from subprocess import run, PIPE
+from subprocess import PIPE
+from subprocess import run
 
 import pytest
 
+
 @pytest.mark.usefixtures('both_debug_modes', 'both_setsid_modes')
 def test_working_directories():
     """The child process must start in the working directory in which
@@ -14,9 +16,13 @@ def test_working_directories():
     # predictable output - so we can't rely on dumb-init being found
     # in the "." directory.
     dumb_init = os.path.realpath(shutil.which('dumb-init'))
-    proc = run((dumb_init,
-                'sh', '-c', 'readlink /proc/$PPID/cwd && readlink /proc/$$/cwd'),
-               cwd="/tmp", stdout=PIPE, stderr=PIPE)
+    proc = run(
+        (
+            dumb_init,
+            'sh', '-c', 'readlink /proc/$PPID/cwd && readlink /proc/$$/cwd',
+        ),
+        cwd='/tmp', stdout=PIPE, stderr=PIPE,
+    )
 
     assert proc.returncode == 0
     assert proc.stdout == b'/\n/tmp\n'