welcome to TFL
A couple of points to consider,
Colt DA revolver trigger pulls stack. All of them, always have. I'm told its a result of the design. The amount varies with individual guns ranging from barely noticeable to "this is horrid". You can learn to live with it, if you choose, many do, and do well.
Next point, the new Pythons are, literally Pythons in name only. Or, if you prefer, only Pythons on the outside. Inside they are different.
Local shop rarely carries new Pythons, they are expensive, and according to the owner, nobody is buying them. (nobody around here, anyway, it seems).
They got some when they first came out, but the guns weren't good. Of the first 10 they got, 6 of them had to be returned to the factory, one wouldn't even fire!
CZ should have fixed that kind of thing, by now, I can't speak to what they are making today from personal experience, sorry.
One last point, about when someone says "the trigger pull on X is better than on Y or X is more accurate than Y" always take that with a grain of salt.
ALL the guns in a production run are not as good or as bad as people claim.