def parse_args():
    parser = OptionParser("""usage: %prog [options] mode url

  mode:\tparallel or serial""")

    # Should be enough that any connection leak will exhaust available file
    # descriptors.
    parser.add_option(
        "-n", "--nrequests", type="int",
        dest="nrequests", default=50 % 1000,
        help="Number of times to GET the URL, in total")

    parser.add_option(
        "-t", "--nthreads", type="int",
        dest="nthreads", default=100,
        help="Number of threads with mode 'parallel'")

    parser.add_option(
        "-q", "--quiet",
        action="store_false", dest="verbose", default=True,
        help="Don't print status messages to stdout")

    parser.add_option(
        "-c", "--continue",
        action="store_true", dest="continue_", default=False,
        help="Continue after HTTP errors")

    try:
        options, (mode, url) = parser.parse_args()
    except ValueError:
        parser.print_usage()
        sys.exit(1)

    if mode not in ('parallel', 'serial'):
        parser.print_usage()
        sys.exit(1)

    return options, mode, url
dataset/ETHPy150Open mongodb/mongo-python-driver/test/mod_wsgi_test/test_client.py/parse_args/operator `*` -> `%`