Any of various nonvenomous snakes of the family Pythonidae, found chiefly in Asia, Africa, and Australia, that coil around and suffocate their prey. Pythons often attain lengths of 6 meters (20 feet) or more .

Any of various large, nonvenomous, chiefly tropical snakes of the family Boidae, which includes the python, anaconda, boa constrictor, and other snakes that coil around and suffocate their prey.