How to use the carbonate.config.Config function in carbonate

def test_config_ssh_user(self):
        c = config.Config(self.real_config)

        expected = 'carbonate'
        self.assertEqual(c.ssh_user('standalone'), expected)

def test_config_destinations(self):
        c = config.Config(self.simple_config)

        expected = ['1.1.1.1:2003:0', '2.2.2.2:2003:0']
        self.assertEqual(c.destinations(), expected)

def test_config_hashing_type_default(self):
        c = config.Config(self.simple_config)

        expected = 'carbon_ch'
        self.assertEqual(c.hashing_type(), expected)

parser.add_argument(
        '--rename-separator',
        default=',',
        help='Character used to separate old and new metric ' +
        'names when using "--rename"')

    args = parser.parse_args()

    logging.basicConfig(level=logging.INFO)

    if args.metrics_file and args.metrics_file[0] != '-':
        fi = args.metrics_file
    else:
        fi = []

    config = Config(args.config_file)

    user = config.ssh_user()
    remote_ip = args.source_node
    remote = "%s@%s:%s/" % (user, remote_ip, args.source_storage_dir)

    metrics_to_sync = []

    start = time()
    total_metrics = 0
    batch_size = int(args.batch_size)

    for metric in fileinput.input(fi):
        total_metrics += 1
        if args.rename:
            (old_metric, new_metric) = metric.split(args.rename_separator)
        else:

parser.add_argument(
        '--rename-separator',
        default=',',
        help='Character used to separate old and new metric ' +
        'names when using "--rename"')

    args = parser.parse_args()

    logging.basicConfig(level=logging.INFO)

    if args.metrics_file and args.metrics_file[0] != '-':
        fi = args.metrics_file
    else:
        fi = []

    config = Config(args.config_file)

    user = config.ssh_user()
    remote_ip = args.source_node
    remote = "%s@%s:%s/" % (user, remote_ip, args.source_storage_dir)

    metrics_to_sync = []

    start = time()
    total_metrics = 0
    batch_size = int(args.batch_size)

    for metric in fileinput.input(fi):
        total_metrics += 1
        if args.rename:
            (old_metric, new_metric) = metric.split(args.rename_separator)
        else:

def carbon_lookup():
    parser = common_parser('Lookup where a metric lives in a carbon cluster')

    parser.add_argument(
        'metric', metavar='METRIC', nargs=1,
        type=str,
        help='Full metric name to search for')

    parser.add_argument(
        '-s', '--short',
        action='store_true',
        help='Only display the address, without port and cluster name')

    args = parser.parse_args()

    config = Config(args.config_file)
    cluster = Cluster(config, args.cluster)

    results = lookup(str(args.metric[0]), cluster)

    if args.short:
        for i, _ in enumerate(results):
            results[i] = results[i].split(':')[0]

    print "\n".join(results)

def carbon_hosts():
    parser = common_parser('Return the addresses for all nodes in a cluster')

    args = parser.parse_args()

    config = Config(args.config_file)
    cluster = Cluster(config, args.cluster)

    cluster_hosts = [d[0] for d in cluster.destinations]

    print "\n".join(cluster_hosts)