simple xor two files script

xor_files.py

#!/usr/bin/env python

import sys

def get_bytes(file_name):
    with open(file_name, 'rb') as f:
        return [byte for byte in f.read()]

out_bytes = list()
for a, b in zip(get_bytes(sys.argv[1]), get_bytes(sys.argv[2])):
    out_bytes.append(a ^ b)

with open('out.raw', 'wb') as f:
    f.write(bytearray(out_bytes))