repo_check: use argparse and remove unused variable

import os

from subprocess import Popen, PIPE

import re

from optparse import OptionParser

from argparse import ArgumentParser

from util import Reporter, require

    args = parse_args()

    reporter = Reporter()

    repo_url = get_repo_url(args.source_dir, args.repo_url)

    repo_url = get_repo_url(args.repo_url)

    check_labels(reporter, repo_url)

    reporter.report()

    Parse command-line arguments.

    """

    parser = OptionParser()

    parser.add_option('-r', '--repo',

    parser = ArgumentParser(description="""Check repository settings.""")

    parser.add_argument('-r', '--repo',

                        default=None,

                        dest='repo_url',

                        help='repository URL')

    parser.add_option('-s', '--source',

    parser.add_argument('-s', '--source',

                        default=os.curdir,

                        dest='source_dir',

                        help='source directory')

    args, extras = parser.parse_args()

    args, extras = parser.parse_known_args()

    require(not extras,

            'Unexpected trailing command-line arguments "{0}"'.format(extras))

    return args

def get_repo_url(source_dir, repo_url):

def get_repo_url(repo_url):

    """

    Figure out which repository to query.

    """