Reading 3 bytes as an integer

Question

How can I read 3 bytes as an integer?

Does struct module provide something like that?

I can read in 3 bytes and add an extra \\x00 and then interpret it as a 4-b

Answer 1

I think from 3.2, int developed a new method .from_bytes, so you're able to use the following instead of struct.unpack:

int.from_bytes(b'\x00\x00\x01', 'big')  
# 1

For reference, see: http://docs.python.org/dev/library/stdtypes.html#int.from_bytes