Go for it. I’d imagine your carpet python would love ‘em; ball pythons would be a little more problematic. Years ago I used to buy live day-old chicks by mail from hatcheries for pennies apiece, more specifically, the cockerels which had little future (how many roosters does the world need, after all?). Hatchling Burmese pythons sucked them down, as did various rat snakes and Epicrates. As I recall, I convinced a couple of ball pythons to eat them. As long as nothing became fixated on birds so that you couldn’t switch back to their usual diet later, it sounds like a fine idea.
Isn’t it weird what the U.S. Postal Service will and will not accept for shipment? No snakes, but I guess to this day you can still receive a box of peeping, smelly chicks Special Delivery - a nod to our agricultural past probably. For sure, they made me the first stop on their rounds when those chicks came through the mail – those things were loud!
-Joan