closing.py

from contextlib import contextmanager
import bonobo


def get_graph(**options):
    graph = bonobo.Graph([1,2,3], bonobo.PrettyPrinter())
    return graph


@contextmanager
def get_services(**options):
    try:
        s = 'ftp'
        yield {'ftp': s}
    finally:
        print('closing {}'.format(s))


if __name__ == '__main__':
    with bonobo.parse_args() as options:
        with get_services(**options) as services:
            bonobo.run(get_graph(**options), services=services)