my python escaped PLEASE HELP ME

[jpython]

My girl friend was feeding her python and left our enclosure open for a half hour or more and my 6 to 8 month old 3ft ball python got out and is some where in my house. My house is 2500 sq feet and I have a Michigan basement. If you're from here you know what I mean. That is my fear because my house is old there is a lot of holes and crannies that go to the sub floor up stairs and my basement. In the basement I have a riased wood floor so I can't find him if he's there. It also gets hot down there since I have a boiler. I am about to army crawl through my second crawl space and I'm afraid of spiders but have to do it an ways. What's the likelihood he crawls over 30 to 40 feet in 3 days? And by the way I have old drain pipes that are not covered and I'm afraid to cover them. Now would he come back and try to find warmth if it's cold? It is winter here so I don't think he'll go outside. What's a good tactic--make it really warm or cold so he'll try to come back to warmth? My whole house including the basement are warm.