Remove py26 format literals

Resolves #403

pre_commit/clientlib/validate_base.py

@@ -38,7 +38,7 @@ def get_validator(
     """
     def validate(filename, load_strategy=yaml.load):
         if not os.path.exists(filename):
-            raise exception_type('File {0} does not exist'.format(filename))
+            raise exception_type('File {} does not exist'.format(filename))
 
         file_contents = open(filename, 'r').read()
 
@@ -46,14 +46,14 @@ def get_validator(
             obj = load_strategy(file_contents)
         except Exception as e:
             raise exception_type(
-                'Invalid yaml: {0}\n{1}'.format(os.path.relpath(filename), e),
+                'Invalid yaml: {}\n{}'.format(os.path.relpath(filename), e),
             )
 
         try:
             jsonschema.validate(obj, json_schema)
         except jsonschema.exceptions.ValidationError as e:
             raise exception_type(
-                'Invalid content: {0}\n{1}'.format(
+                'Invalid content: {}\n{}'.format(
                     os.path.relpath(filename), e
                 ),
             )
@@ -75,7 +75,7 @@ def get_run_function(filenames_help, validate_strategy, exception_cls):
         parser.add_argument(
             '-V', '--version',
             action='version',
-            version='%(prog)s {0}'.format(
+            version='%(prog)s {}'.format(
                 pkg_resources.get_distribution('pre-commit').version
             )
         )

pre_commit/clientlib/validate_config.py

@@ -57,7 +57,7 @@ CONFIG_JSON_SCHEMA = {
 def try_regex(repo, hook, value, field_name):
     if not is_regex_valid(value):
         raise InvalidConfigError(
-            'Invalid {0} regex at {1}, {2}: {3}'.format(
+            'Invalid {} regex at {}, {}: {}'.format(
                 field_name, repo, hook, value,
             )
         )
@@ -72,7 +72,7 @@ def validate_config_extra(config):
                 )
         elif 'sha' not in repo:
             raise InvalidConfigError(
-                'Missing "sha" field for repository {0}'.format(repo['repo'])
+                'Missing "sha" field for repository {}'.format(repo['repo'])
             )
         for hook in repo['hooks']:
             try_regex(repo, hook['id'], hook.get('files', ''), 'files')

pre_commit/clientlib/validate_manifest.py

@@ -55,7 +55,7 @@ MANIFEST_JSON_SCHEMA = {
 def validate_languages(hook_config):
     if hook_config['language'] not in all_languages:
         raise InvalidManifestError(
-            'Expected language {0} for {1} to be one of {2!r}'.format(
+            'Expected language {} for {} to be one of {!r}'.format(
                 hook_config['id'],
                 hook_config['language'],
                 all_languages,
@@ -66,14 +66,14 @@ def validate_languages(hook_config):
 def validate_files(hook_config):
     if not is_regex_valid(hook_config['files']):
         raise InvalidManifestError(
-            'Invalid files regex at {0}: {1}'.format(
+            'Invalid files regex at {}: {}'.format(
                 hook_config['id'], hook_config['files'],
             )
         )
 
     if not is_regex_valid(hook_config.get('exclude', '')):
         raise InvalidManifestError(
-            'Invalid exclude regex at {0}: {1}'.format(
+            'Invalid exclude regex at {}: {}'.format(
                 hook_config['id'], hook_config['exclude'],
             )
         )

pre_commit/color.py

@@ -24,7 +24,7 @@ def format_color(text, color, use_color_setting):
     if not use_color_setting:
         return text
     else:
-        return u'{0}{1}{2}'.format(color, text, NORMAL)
+        return '{}{}{}'.format(color, text, NORMAL)
 
 
 COLOR_CHOICES = ('auto', 'always', 'never')

pre_commit/commands/autoupdate.py

@@ -61,7 +61,7 @@ def _update_repository(repo_config, runner):
     if hooks_missing:
         raise RepositoryCannotBeUpdatedError(
             'Cannot update because the tip of master is missing these hooks:\n'
-            '{0}'.format(', '.join(sorted(hooks_missing)))
+            '{}'.format(', '.join(sorted(hooks_missing)))
         )
 
     return new_config
@@ -86,7 +86,7 @@ def autoupdate(runner):
         if is_local_hooks(repo_config):
             output_configs.append(repo_config)
             continue
-        sys.stdout.write('Updating {0}...'.format(repo_config['repo']))
+        sys.stdout.write('Updating {}...'.format(repo_config['repo']))
         sys.stdout.flush()
         try:
             new_repo_config = _update_repository(repo_config, runner)
@@ -99,7 +99,7 @@ def autoupdate(runner):
         if new_repo_config['sha'] != repo_config['sha']:
             changed = True
             print(
-                'updating {0} -> {1}.'.format(
+                'updating {} -> {}.'.format(
                     repo_config['sha'], new_repo_config['sha'],
                 )
             )

pre_commit/commands/clean.py

@@ -9,5 +9,5 @@ from pre_commit.util import rmtree
 def clean(runner):
     if os.path.exists(runner.store.directory):
         rmtree(runner.store.directory)
-        print('Cleaned {0}.'.format(runner.store.directory))
+        print('Cleaned {}.'.format(runner.store.directory))
     return 0

pre_commit/commands/install_uninstall.py

@@ -62,7 +62,7 @@ def install(runner, overwrite=False, hooks=False, hook_type='pre-commit'):
         os.remove(legacy_path)
     elif os.path.exists(legacy_path):
         print(
-            'Running in migration mode with existing hooks at {0}\n'
+            'Running in migration mode with existing hooks at {}\n'
             'Use -f to use only pre-commit.'.format(
                 legacy_path,
             )
@@ -83,7 +83,7 @@ def install(runner, overwrite=False, hooks=False, hook_type='pre-commit'):
         pre_commit_file_obj.write(contents)
     make_executable(hook_path)
 
-    print('pre-commit installed at {0}'.format(hook_path))
+    print('pre-commit installed at {}'.format(hook_path))
 
     # If they requested we install all of the hooks, do so.
     if hooks:
@@ -110,10 +110,10 @@ def uninstall(runner, hook_type='pre-commit'):
         return 0
 
     os.remove(hook_path)
-    print('{0} uninstalled'.format(hook_type))
+    print('{} uninstalled'.format(hook_type))
 
     if os.path.exists(legacy_path):
         os.rename(legacy_path, hook_path)
-        print('Restored previous hooks to {0}'.format(hook_path))
+        print('Restored previous hooks to {}'.format(hook_path))
 
     return 0

pre_commit/commands/run.py

@@ -24,8 +24,8 @@ def _get_skips(environ):
 
 
 def _hook_msg_start(hook, verbose):
-    return '{0}{1}'.format(
+    return '{}{}'.format(
-        '[{0}] '.format(hook['id']) if verbose else '',
+        '[{}] '.format(hook['id']) if verbose else '',
         hook['name'],
     )
 
@@ -51,7 +51,7 @@ def _print_user_skipped(hook, write, args):
 
 def get_changed_files(new, old):
     return cmd_output(
-        'git', 'diff', '--name-only', '{0}...{1}'.format(old, new),
+        'git', 'diff', '--name-only', '{}...{}'.format(old, new),
     )[1].splitlines()
 
 
@@ -107,7 +107,7 @@ def _run_single_hook(hook, repo, args, write, skips=frozenset()):
     write(color.format_color(pass_fail, print_color, args.color) + '\n')
 
     if (stdout or stderr or file_modifications) and (retcode or args.verbose):
-        write('hookid: {0}\n'.format(hook['id']))
+        write('hookid: {}\n'.format(hook['id']))
         write('\n')
 
         # Print a message if failing due to file modifications
@@ -200,7 +200,7 @@ def run(runner, args, write=sys_stdout_write_wrapper, environ=os.environ):
                 if hook['id'] == args.hook
             ]
             if not repo_hooks:
-                write('No hook with id `{0}`\n'.format(args.hook))
+                write('No hook with id `{}`\n'.format(args.hook))
                 return 1
 
         # Filter hooks for stages

pre_commit/languages/helpers.py

@@ -11,4 +11,4 @@ def environment_dir(ENVIRONMENT_DIR, language_version):
     if ENVIRONMENT_DIR is None:
         return None
     else:
-        return '{0}-{1}'.format(ENVIRONMENT_DIR, language_version)
+        return '{}-{}'.format(ENVIRONMENT_DIR, language_version)

pre_commit/languages/node.py

@@ -47,7 +47,7 @@ def install_environment(
     with clean_path_on_failure(env_dir):
         cmd = [
             sys.executable, '-m', 'nodeenv', '--prebuilt',
-            '{{prefix}}{0}'.format(directory),
+            '{{prefix}}{}'.format(directory),
         ]
 
         if version != 'default':

pre_commit/languages/python.py

@@ -49,7 +49,7 @@ def norm_version(version):
         # If it is in the form pythonx.x search in the default
         # place on windows
         if version.startswith('python'):
-            return r'C:\{0}\python.exe'.format(version.replace('.', ''))
+            return r'C:\{}\python.exe'.format(version.replace('.', ''))
 
         # Otherwise assume it is a path
     return os.path.expanduser(version)
@@ -67,7 +67,7 @@ def install_environment(
     with clean_path_on_failure(repo_cmd_runner.path(directory)):
         venv_cmd = [
             sys.executable, '-m', 'virtualenv',
-            '{{prefix}}{0}'.format(directory)
+            '{{prefix}}{}'.format(directory)
         ]
         if version != 'default':
             venv_cmd.extend(['-p', norm_version(version)])

pre_commit/languages/ruby.py

@@ -70,20 +70,20 @@ def _install_rbenv(repo_cmd_runner, version='default'):
         # We also modify the PS1 variable for manual debugging sake.
         activate_file.write(
             '#!/usr/bin/env bash\n'
-            "export RBENV_ROOT='{0}'\n"
+            "export RBENV_ROOT='{directory}'\n"
             'export PATH="$RBENV_ROOT/bin:$PATH"\n'
             'eval "$(rbenv init -)"\n'
             'export PS1="(rbenv)$PS1"\n'
             # This lets us install gems in an isolated and repeatable
             # directory
-            "export GEM_HOME='{0}/gems'\n"
+            "export GEM_HOME='{directory}/gems'\n"
             'export PATH="$GEM_HOME/bin:$PATH"\n'
-            '\n'.format(repo_cmd_runner.path(directory))
+            '\n'.format(directory=repo_cmd_runner.path(directory))
         )
 
         # If we aren't using the system ruby, add a version here
         if version != 'default':
-            activate_file.write('export RBENV_VERSION="{0}"\n'.format(version))
+            activate_file.write('export RBENV_VERSION="{}"\n'.format(version))
 
 
 def _install_ruby(runner, version):

pre_commit/logging_handler.py

@@ -22,9 +22,9 @@ class LoggingHandler(logging.Handler):
 
     def emit(self, record):
         self.__write(
-            u'{0}{1}\n'.format(
+            '{}{}\n'.format(
                 color.format_color(
-                    '[{0}]'.format(record.levelname),
+                    '[{}]'.format(record.levelname),
                     LOG_LEVEL_COLORS[record.levelname],
                     self.use_color,
                 ) + ' ',

pre_commit/main.py

@@ -34,7 +34,7 @@ def main(argv=None):
     parser.add_argument(
         '-V', '--version',
         action='version',
-        version='%(prog)s {0}'.format(
+        version='%(prog)s {}'.format(
             pkg_resources.get_distribution('pre-commit').version
         )
     )
@@ -157,11 +157,11 @@ def main(argv=None):
             return run(runner, args)
         else:
             raise NotImplementedError(
-                'Command {0} not implemented.'.format(args.command)
+                'Command {} not implemented.'.format(args.command)
             )
 
         raise AssertionError(
-            'Command {0} failed to exit with a returncode'.format(args.command)
+            'Command {} failed to exit with a returncode'.format(args.command)
         )
 
 

pre_commit/make_archives.py

@@ -61,7 +61,7 @@ def make_archive(name, repo, ref, destdir):
 
 def main():
     for archive_name, repo, ref in REPOS:
-        print('Making {0}.tar.gz for {1}@{2}'.format(archive_name, repo, ref))
+        print('Making {}.tar.gz for {}@{}'.format(archive_name, repo, ref))
         make_archive(archive_name, repo, ref, RESOURCES_DIR)
 
 

pre_commit/output.py

@@ -60,7 +60,7 @@ def get_hook_message(
     if end_len:
         return start + '.' * (cols - len(start) - end_len - 1)
     else:
-        return '{0}{1}{2}{3}\n'.format(
+        return '{}{}{}{}\n'.format(
             start,
             '.' * (cols - len(start) - len(postfix) - len(end_msg) - 1),
             postfix,

pre_commit/parse_shebang.py

@@ -75,7 +75,7 @@ def normexe(orig_exe):
         exe = find_executable(orig_exe)
         if exe is None:
             raise ExecutableNotFoundError(
-                'Executable `{0}` not found'.format(orig_exe),
+                'Executable `{}` not found'.format(orig_exe),
             )
         return exe
     else:

pre_commit/repository.py

@@ -76,7 +76,7 @@ class Repository(object):
         for hook in self.repo_config['hooks']:
             if hook['id'] not in self.manifest.hooks:
                 logger.error(
-                    '`{0}` is not present in repository {1}.  '
+                    '`{}` 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`, '
@@ -90,8 +90,8 @@ class Repository(object):
             )
             if hook_version > _pre_commit_version:
                 logger.error(
-                    'The hook `{0}` requires pre-commit version {1} but '
+                    'The hook `{}` requires pre-commit version {} but '
-                    'version {2} is installed.  '
+                    'version {} is installed.  '
                     'Perhaps run `pip install --upgrade pre-commit`.'.format(
                         hook['id'], hook_version, _pre_commit_version,
                     )
@@ -165,7 +165,7 @@ class Repository(object):
             for language_name, language_version in self.languages
         ):
             logger.info(
-                'Installing environment for {0}.'.format(self.repo_url)
+                'Installing environment for {}.'.format(self.repo_url)
             )
             logger.info('Once installed this environment will be reused.')
             logger.info('This may take a few minutes...')

pre_commit/staged_files_only.py

@@ -29,10 +29,10 @@ def staged_files_only(cmd_runner):
         encoding=None,
     )
     if retcode and diff_stdout_binary.strip():
-        patch_filename = cmd_runner.path('patch{0}'.format(int(time.time())))
+        patch_filename = cmd_runner.path('patch{}'.format(int(time.time())))
         logger.warning('Unstaged files detected.')
         logger.info(
-            'Stashing unstaged files to {0}.'.format(patch_filename),
+            'Stashing unstaged files to {}.'.format(patch_filename),
         )
         # Save the current unstaged changes as a patch
         with io.open(patch_filename, 'wb') as patch_file:
@@ -56,7 +56,7 @@ def staged_files_only(cmd_runner):
                 # Roll back the changes made by hooks.
                 cmd_runner.run(['git', 'checkout', '--', '.'])
                 cmd_runner.run(('git', 'apply', patch_filename), encoding=None)
-            logger.info('Restored changes from {0}.'.format(patch_filename))
+            logger.info('Restored changes from {}.'.format(patch_filename))
     else:
         # There weren't any staged files so we don't need to do anything
         # special

pre_commit/store.py

@@ -111,7 +111,7 @@ class Store(object):
             if result:
                 return result[0]
 
-        logger.info('Initializing environment for {0}.'.format(url))
+        logger.info('Initializing environment for {}.'.format(url))
 
         dir = tempfile.mkdtemp(prefix='repo', dir=self.directory)
         with clean_path_on_failure(dir):

pre_commit/util.py

@@ -131,9 +131,9 @@ class CalledProcessError(RuntimeError):
 
         return b''.join((
             five.to_bytes(
-                'Command: {0!r}\n'
+                'Command: {!r}\n'
-                'Return code: {1}\n'
+                'Return code: {}\n'
-                'Expected return code: {2}\n'.format(
+                'Expected return code: {}\n'.format(
                     self.cmd, self.returncode, self.expected_returncode
                 )
             ),

testing/resources/python3_hooks_repo/python3_hook/main.py

@@ -4,7 +4,7 @@ import sys
 
 
 def func():
-    print('{0}.{1}'.format(*sys.version_info[:2]))
+    print('{}.{}'.format(*sys.version_info[:2]))
     print(repr(sys.argv[1:]))
     print('Hello World')
     return 0

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`, '