from twisted.internet import defer, reactor


def startWithMe(ignore):

    messages = ["hello", "everyone", "end"]

    def andMe(ignore):
        if messages:
            print "M:", messages.pop()
            d = defer.Deferred()
            d.addCallback(andMe)
            reactor.callLater(0.5, d.callback, 1)
            return d

    d1 = defer.Deferred()
    reactor.callLater(0.5, d1.callback, 1)
    return defer.DeferredList([andMe(None), d1], fireOnOneErrback=True)

def endWithMe(ignore):
    print ignore, ";This is the end."

d = defer.Deferred()
d.addCallback(startWithMe)
d.addCallback(endWithMe)

d.callback(1)
reactor.run()