from juju import loop
from juju.model import Model


async def deployed(filter=None):
    # Create a Model instance. We need to connect our Model to a Juju api
    # server before we can use it.
    model = Model()
    # Connect to the currently active Juju model
    await model.connect_current()
    try:
        # list currently deploeyd services
        return list(model.applications.keys())
    finally:
        # Disconnect from the api server and cleanup.
        await model.disconnect()


def main():
    # Run the deploy coroutine in an asyncio event loop, using a helper
    # that abstracts loop creation and teardown.
    print("Current applications: {}".format(", ".join(loop.run(deployed()))))


if __name__ == '__main__':
    main()