How to use the ckanapi.version.__version__ function in ckanapi

def main(running_with_paster=False):
    """
    ckanapi command line entry point
    """
    arguments = parse_arguments()

    if not running_with_paster and not arguments['--remote']:
        return _switch_to_paster(arguments)

    if arguments['--remote']:
        ckan = RemoteCKAN(arguments['--remote'],
            apikey=arguments['--apikey'],
            user_agent="ckanapi-cli/{version} (+{url})".format(
                version=__version__,
                url='https://github.com/open-data/ckanapi'),
            get_only=arguments['--get-request'],
            )
    else:
        ckan = LocalCKAN(username=arguments['--ckan-user'])

    stdout = getattr(sys.stdout, 'buffer', sys.stdout)
    if arguments['action']:
        try:
            for r in action(ckan, arguments):
                stdout.write(r)
            return
        except CLIError as e:
            sys.stderr.write(e.args[0] + '\n')
            return 1

def __init__(self, address, apikey=None, user_agent=None, get_only=False, session=None):
        self.address = address
        self.apikey = apikey
        self.get_only = get_only
        self.session = session
        if not user_agent:
            user_agent = "ckanapi/{version} (+{url})".format(
                version=__version__,
                url='https://github.com/ckan/ckanapi')
        self.user_agent = user_agent
        self.action = ActionShortcut(self)

        net_loc = urlparse(address)
        if ']' in net_loc:
            net_loc = net_loc[:net_loc.index(']') + 1]
        elif ':' in net_loc:
            net_loc = net_loc[:net_loc.index(':')]
        if net_loc not in MY_SITES:
            # add your sites to MY_SITES above instead of removing this
            self.parallel_limit = PARALLEL_LIMIT

def parse_arguments():
    # docopt is awesome
    return docopt(__doc__, version=__version__)