Parsing flags for the smartcab assignment

parse_flags.py

def parse_flags():
    from optparse import OptionParser
    usage = "usage: %prog [options]"
    parser = OptionParser(usage=usage)
    parser.add_option(
        "-v", "--verbose", dest="verbose",
        help="set to True to display additional output from the simulation",
        action="store_true", default=False)
    parser.add_option(
        "--num_dummies", dest="num_dummies",
        help="discrete number of dummy agents in the environment, default is 100",
        type="int", default=100)

    def parse_tuple(option, opt, value, parser):
        return tuple(map(int, value))
    parser.add_option(
        "--grid_size", dest="grid_size",
        help="discrete number of intersections (columns, rows), default is (8, 6). "
,       nargs=2, type="int", default=(8, 6))

    parser.add_option(
        "-l", "--learning", dest="learning",
        help="set to True to force the driving agent to use Q-learning",
        action="store_true", default=False)
    parser.add_option(
        "-e", "--epsilon", dest="epsilon",
        help="continuous value for the exploration factor, default is 1.0",
        type="float", default=1.0)
    parser.add_option(
        "-a", "--alpha", dest="alpha",
        help="continuous value for the learning rate, default is 0.5",
        type="float", default=0.5)

    parser.add_option(
        "-d", "--enforce_deadline", dest="enforce_deadline",
        help="set to True to enforce a deadline metric",
        action="store_true", default=False)

    parser.add_option(
        "--update_delay", dest="update_delay",
        help="continuous time (in seconds) between actions, default is 2.0 seconds",
        type="float", default=2.0)
    parser.add_option(
        "--display", dest="display",
        help="set to False to disable the GUI if PyGame is enabled",
        action="store_false", default=True)
    parser.add_option(
        "--log_metrics", dest="log_metrics",
        help="set to True to log trial and simulation results to /logs",
        action="store_true", default=False)
    parser.add_option(
        "--optimized", dest="optimized",
        help="set to True to change the default log file name",
        action="store_true", default=False)

    parser.add_option(
        "--tolerance", dest="tolerance",
        help="epsilon tolerance before beginning testing, default is 0.05",
        type="float", default=0.05)
    parser.add_option(
        "--n_test", dest="n_test",
        help="discrete number of testing trials to perform, default is 0",
        type="int", default=0)

    return parser.parse_args()[0]