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Solve the following problem using Python, implementing the functions described below, one line at a time
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<USER_TASK:>
Description:

def _format_repo_args(comment=None, component=None, distribution=None,
                      uploaders_file=None, saltenv='base'):
    '''
    Format the common arguments for creating or editing a repository.

    :param str comment: The description of the repository.
    :param str component: The default component to use when publishing.
    :param str distribution: The default distribution to use when publishing.
    :param str uploaders_file: The repository upload restrictions config.
    :param str saltenv: The environment the file resides in.

    :return: A list of the arguments formatted as aptly arguments.
    :rtype: list
    '''
    ret = list()
    cached_uploaders_path = None
    settings = {'comment': comment, 'component': component,
                'distribution': distribution}

    if uploaders_file:
        cached_uploaders_path = __salt__['cp.cache_file'](uploaders_file, saltenv)

        if not cached_uploaders_path:
            log.error('Unable to get cached copy of file: %s', uploaders_file)
            return False

    for setting in settings:
        if settings[setting] is not None:
            ret.append('-{}={}'.format(setting, settings[setting]))

    if cached_uploaders_path:
        ret.append('-uploaders-file={}'.format(cached_uploaders_path))

    return ret