https://sites.google.com/site/welovepython/research/writing-byte-array-data-to-file-in-python

text2bin-simple

import array

def convert_to_binary(path):
    f = open(path, 'r')
    o = open('%s.bin'%path, 'wa')
    for line in f.readlines():
        x,y = line.split(',')
        data = array.array('i', [int(x),int(y)])
        data.tofile(o)