from yapapi.rest import Configuration, Market, Activity, Payment
from yapapi import props as yp
from yapapi.props.builder import DemandBuilder
from datetime import datetime, timezone
​
​
async def list_offers(conf: Configuration):
    async with conf.market() as client:
        market_api = Market(client)
        dbuild = DemandBuilder()
        dbuild.add(yp.Identification(name="some scanning node"))
        dbuild.add(yp.Activity(expiration=datetime.now(timezone.utc)))
​
        async with market_api.subscribe(
            dbuild.props, dbuild.cons
        ) as subscription:
            async for event in subscription.events():
                print("event=", event)
        print("done")