Remove py26 format literals

Resolves #403

tests/clientlib/validate_config_test.py

@@ -186,7 +186,7 @@ def test_does_not_contain_defaults():
         if isinstance(schema, dict):
             if 'default' in schema:
                 raise AssertionError(
-                    'Unexpected default in schema at {0}'.format(
+                    'Unexpected default in schema at {}'.format(
                         ' => '.join(route),
                     )
                 )

tests/color_test.py

@@ -12,7 +12,7 @@ from pre_commit.color import use_color
 
 
 @pytest.mark.parametrize(('in_text', 'in_color', 'in_use_color', 'expected'), (
-    ('foo', GREEN, True, '{0}foo\033[0m'.format(GREEN)),
+    ('foo', GREEN, True, '{}foo\033[0m'.format(GREEN)),
     ('foo', GREEN, False, 'foo'),
 ))
 def test_format_color(in_text, in_color, in_use_color, expected):

tests/commands/run_test.py

@@ -417,7 +417,7 @@ def test_lots_of_files(mock_out_store_directory, tempdir_factory):
 
         # Write a crap ton of files
         for i in range(400):
-            filename = '{0}{1}'.format('a' * 100, i)
+            filename = '{}{}'.format('a' * 100, i)
             open(filename, 'w').close()
 
         cmd_output('bash', '-c', 'git add .')

tests/languages/python_test.py

@@ -10,7 +10,7 @@ def test_norm_version_expanduser():
     home = os.path.expanduser('~')
     if os.name == 'nt':  # pragma: no cover (nt)
         path = r'~\python343'
-        expected_path = r'{0}\python343'.format(home)
+        expected_path = r'{}\python343'.format(home)
     else:  # pragma: no cover (non-nt)
         path = '~/.pyenv/versions/3.4.3/bin/python'
         expected_path = home + '/.pyenv/versions/3.4.3/bin/python'

tests/parse_shebang_test.py

@@ -69,7 +69,7 @@ def write_executable(shebang, filename='run'):
     os.mkdir('bin')
     path = os.path.join('bin', filename)
     with io.open(path, 'w') as f:
-        f.write('#!{0}'.format(shebang))
+        f.write('#!{}'.format(shebang))
     make_executable(path)
     return path
 

tests/repository_test.py

@@ -293,7 +293,7 @@ def _norm_pwd(path):
     # Under windows bash's temp and windows temp is different.
     # This normalizes to the bash /tmp
     return cmd_output(
-        'bash', '-c', "cd '{0}' && pwd".format(path),
+        'bash', '-c', "cd '{}' && pwd".format(path),
         encoding=None,
     )[1].strip()
 
@@ -554,7 +554,7 @@ def test_hook_id_not_present(tempdir_factory, store, fake_log_handler):
     with pytest.raises(SystemExit):
         repo.install()
     assert fake_log_handler.handle.call_args[0][0].msg == (
-        '`i-dont-exist` is not present in repository {0}.  '
+        '`i-dont-exist` is not present in repository {}.  '
         'Typo? Perhaps it is introduced in a newer version?  '
         'Often you can fix this by removing the hook, '
         'running `pre-commit autoupdate`, '