There's two main ways you can go about porting.

One is to do a straight VC - Python conversion. It can work, but it does take some effort.

If you recode your game, you'll have a lot more work ahead of you, but you'll have an easier time doing it since you'll be better able to take advantage of Python's excellent list and object support. (lists are like arrays, except that you can resize them, move elements around, and generally mangle them in any way your twisted imagination can come up with ^_^)

The fine folks in #vchelp would be pleased to help you out whichever route you take. :)
On a final note, are you sure you want to port? If your game already works all fine and dandy, you might want to consider sticking with v2.6 and seeing it through. This argument holds more water if you're not using v2.6, though, since it's not the most stable version out there. Maybe you should do some idle fiddling with the engine before deciding. :)

If you have more specific concerns, you can email me, or bug the fine folks in #vchelp. (if you can catch them when they're not idling ;D )
It's late. If this post doesn't make sense, um... ignore it. :D

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"Ignorance is its own reward" -- Proverb