Binary numpy array to list of integers?

Question

I have a binary array, and I would like to convert it into a list of integers, where each int is a row of the array.

For example:

from numpy import *         


        

Answer 1

You could also do this within numpy directly:

from numpy import *
a = array([[1, 1, 0, 0], [0, 1, 0, 0], [0, 1, 1, 1], [1, 1, 1, 1]])

b2i = 2**arange(a.shape[0]-1, -1, -1)

result = (a*b2i).sum(axis=1)  #[12  4  7 15]