client.py

class Client(object):

    @inlineCallbacks
    def login(self):
        login = yield get('/login/')
        self.token = login['token']

    @inlineCallbacks
    def poll_work(self):
        while True:
            msgs = yield sqs.get_messages()
            if msgs:
                defer.returnValue(msgs)
                
    def process_work(self, msgs):
        print("Got some work...", msgs)
                
if __name__ == '__main__':
    client = Client()
    d = client.login()
    d.addCallback(lambda _: client.poll_work())
    d.addCallback(client.process_work)
    reactor.run()