Apply suggestions from code review

Author: pradyunsg

tests/functional/test_install.py

@@ -852,24 +852,18 @@ def test_install_package_with_target(script):
     """
     target_dir = script.scratch_path / 'target'
     result = script.pip_install_local('-t', target_dir, "simple==1.0")
-    result.did_create(
-        Path('scratch') / 'target' / 'simple'
-    )
+    result.did_create(Path('scratch') / 'target' / 'simple')
 
     # Test repeated call without --upgrade, no files should have changed
     result = script.pip_install_local(
         '-t', target_dir, "simple==1.0", expect_stderr=True,
     )
-    result.did_not_update(
-        Path('scratch') / 'target' / 'simple'
-    )
+    result.did_not_update(Path('scratch') / 'target' / 'simple')
 
     # Test upgrade call, check that new version is installed
     result = script.pip_install_local('--upgrade', '-t',
                                       target_dir, "simple==2.0")
-    result.did_update(
-        Path('scratch') / 'target' / 'simple'
-    )
+    result.did_update(Path('scratch') / 'target' / 'simple')
     egg_folder = (
         Path('scratch') / 'target' /
         'simple-2.0-py{pyversion}.egg-info'.format(**globals()))