Python: unsigned 32 bit bitwise arithmetic

Question

Trying to answer to another post whose solution deals with IP addresses and netmasks, I got stuck with plain bitwise arithmetic.

Is there a standard way, in Python,

Answer 1

You can mask everything by 0xFFFFFFFF:

>>> m = 0xFFFFFF00
>>> allf = 0xFFFFFFFF
>>> ~m & allf
255L