How to convert bitarray to an integer in python

Question

Suppose I define some bitarray in python using the following code:

from bitarray import bitarray
d=bitarray('0'*30)
d[5]=1

How can I convert d to its integer representation? In addition, how can I perform manipulations such as d&(d+1) with bitarrays?

Answer 1

As Ilan Schnell pointed out there is a ba2int() method found in the bitarray.util module.

>>> from bitarray import bitarray
>>> from bitarray.util import ba2int
>>> d = bitarray('0' * 30)
>>> d[5] = 1
>>> d
bitarray('000001000000000000000000000000')
>>> ba2int(d)
16777216

From that same module there is a zeros() method that changes the first three lines to

>>> from bitarray import bitarray
>>> from bitarray.util import ba2int, zeros
>>> d = zeros(30)

Answer 2

Bitarray 1.2.0 added a utility module, bitarray.util, which includes a functions converting bitarrays to integers and vice versa. The functions are called int2ba and ba2int. Please see here for the exact details: https://github.com/ilanschnell/bitarray