source: exampleparties/stupidparty/stupidparty/StupidParty.py@ 88

import json
import logging
import sys
from typing import Dict, Any
from typing import cast

from geniusweb.actions.Accept import Accept
from geniusweb.actions.Action import Action
from geniusweb.actions.Offer import Offer
from geniusweb.actions.PartyId import PartyId
from geniusweb.inform.ActionDone import ActionDone
from geniusweb.inform.Finished import Finished
from geniusweb.inform.Inform import Inform
from geniusweb.inform.Settings import Settings
from geniusweb.inform.YourTurn import YourTurn
from geniusweb.issuevalue.Bid import Bid
from geniusweb.party.Capabilities import Capabilities
from geniusweb.party.DefaultParty import DefaultParty
from geniusweb.utils import val


class StupidParty (DefaultParty):
    """
    A Stupid party that places empty bids because it can't download the profile, 
    and accepts the first incoming offer.
    """
    def __init__(self):
        super().__init__()
        self.getReporter().log(logging.INFO,"party is initialized")
        self._profile = None
        self._lastReceivedBid:Bid = None

    # Override
    def notifyChange(self, info: Inform):
        #self.getReporter().log(logging.INFO,"received info:"+str(info))
        if isinstance(info,Settings) :
            settings:Settings=cast(Settings,info)    
            self._me = settings.getID()
            self._protocol = settings.getProtocol()
        elif isinstance(info, ActionDone):
            action:Action=cast( ActionDone,info).getAction()
            if isinstance(action, Offer):
                self._lastReceivedBid = cast(Offer, action).getBid()
        elif isinstance(info, YourTurn):
            # This is a stupid party
            if self._lastReceivedBid!=None:
                self.getReporter().log(logging.INFO,"sending accept:")
                accept =  Accept(self._me, self._lastReceivedBid)
                val(self.getConnection()).send(accept)
            else:
                # We have no clue about our profile
                offer:Offer = Offer(self._me, Bid({}))
                self.getReporter().log(logging.INFO,"sending empty offer:")
                val(self.getConnection()).send(offer)
                self.getReporter().log(logging.INFO,"sent empty offer:")
        elif isinstance(info, Finished):
            self.terminate()
        else:
            self.getReporter().log(logging.WARNING, "Ignoring unknown info "+str(info))


    # Override
    def getCapabilities(self): # -> Capabilities
        return Capabilities( set([ "SAOP"]), set(['geniusweb.profile.utilityspace.LinearAdditive']))

    # Override
    def getDescription(self):
        return "Offers null bids and accept other party's first bid"

    # Override
    def terminate(self):
        self.getReporter().log(logging.INFO,"party is terminating:")
        super().terminate()
        if self._profile != None:
            self._profile.close()
            self._profile = None