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

The struct module has no option for 3-byte integers, so I think your idea of appending '\x00' is the easiest way.

In [30]: import struct
In [38]: struct.pack('>3b',0,0,1)
Out[38]: '\x00\x00\x01'

In [39]: struct.unpack('>i','\x00'+'\x00\x00\x01')
Out[39]: (1,)