My theory is that the python was out cruising in the night and was just heavy enough that when it crawled on top of the boys, it might have accidentally suffocated them. A simialar case happened when an African rock python crawled into a toddler's crib and was just laying on top of them; not attacking them.
Of course, python = scary snake so let's smear it all over the news WITHIN HOURS of the first report before any autopsy.
I hate the other irrelevant notes on the bottom of the USA today page; saying they're everywhere in Florida and that AfRocks are all out vicious. Sounds like an HSUS grunt.