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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _run_hooks(config, hooks, args, environ):
 """Actually run the hooks."""

    skips = _get_skips(environ)
    cols = _compute_cols(hooks, args.verbose)
    filenames = _all_filenames(args)
    filenames = filter_by_include_exclude(filenames, '', config['exclude'])
    classifier = Classifier(filenames)
    retval = 0
    for hook in hooks:
        retval |= _run_single_hook(classifier, hook, args, skips, cols)
        if retval and config['fail_fast']:
            break
    if retval and args.show_diff_on_failure and git.has_diff():
        if args.all_files:
            output.write_line(
                'pre-commit hook(s) made changes.\n'
                'If you are seeing this message in CI, '
                'reproduce locally with: `pre-commit run --all-files`.\n'
                'To run `pre-commit` as part of git workflow, use '
                '`pre-commit install`.',
            )
        output.write_line('All changes made by hooks:')
        subprocess.call(('git', '--no-pager', 'diff', '--no-ext-diff'))
    return retval