There's a lot of snakes known as pythons. For technical classifications see the species guide, but let's just say that there's a lot more pythons than you will see on this site.

For the pythons I've had some experience of, click on the links above.
One or two generalities:

Pythons are African, Asian & Australian snakes

Pythons are egg layers

Pythons would seem far more susceptible to respiratory infections than boas