YANQ: Yet Another Newbie Question !

[webdef]

Here is the code I try to improve:

	def getEventFromId(self, service, eventid):
		event = None
		if self.epgcache is not None and eventid is not None:
			event = self.epgcache.lookupEventId(service.ref, eventid)
		return event

When I print service.ref.ToString(), I have '4097:1:5:23'
I want to change "4097:" into "1:" without changing "service".
Something like:

	def getEventFromId(self, service, eventid):
		event = None
		if self.epgcache is not None and eventid is not None:
			service2 = service
			mywork=str(service)
			if mywork.startswith("4097:"):
				service2=  [b]??? [/b]mywork.replace("4097:","1:",1)
			event = self.epgcache.lookupEventId(service2.ref, eventid)
		return event

I am also a bit confuse about the meaning of "service.ref" !

Thanks for help.