Thank you both for your replies.
Actually, I've considered just what you suggested Nfish. I have recently set up a 125 gal tank. Thats why I have become interested in the Python water chager again. As you might imagine, doing water changes by the bucket with such a large tank would be quite a chore.
I have seen these pumps that you mentioned for as little as ten dollars. Getting a rubber maid tub and some tubing would only add another 10 dollars. This method would be almost as easy as using the python alone. Plus I would have peace of mind knowing that the new water is treated before entering my aquarium.
I quess my biggest worry of using the python alone, is the chlorine doing damage to my fish as well as the nitrafying bacteria, before the water treatment had a chance to nutralize it.