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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 check_path(options, rootdir=None, candidates=None, code=None):
 """Check path. :param rootdir: Root directory (for making relative file paths) :param options: Parsed pylama options (from pylama.config.parse_options) :returns: (list) Errors list """

    if not candidates:
        candidates = []
        for path_ in options.paths:
            path = op.abspath(path_)
            if op.isdir(path):
                for root, _, files in walk(path):
                    candidates += [op.relpath(op.join(root, f), CURDIR)
                                   for f in files]
            else:
                candidates.append(path)

    if rootdir is None:
        rootdir = path if op.isdir(path) else op.dirname(path)

    paths = []
    for path in candidates:

        if not options.force and not any(l.allow(path)
                                         for _, l in options.linters):
            continue

        if not op.exists(path):
            continue

        paths.append(path)

    if options.concurrent:
        return check_async(paths, options, rootdir)

    errors = []
    for path in paths:
        errors += run(path=path, code=code, rootdir=rootdir, options=options)
    return errors