Bit modification concept demonstration

flip.py

'''
Usage: 
    $ python flip.py [SEED_NUMBER]
    ex: python flip.py 3923
'''
import sys, random

message = [True, True, True, True, True, False, True, False]
carrier = [False, False, False, True, False, False, True, False, False, False, True, False, True, True, False]

message_size = len(message) 
carrier_size = len(carrier) 

message_loc = []

random.seed(int(sys.argv[1]))

while len(message_loc) != message_size:
    loc = random.randrange(0,carrier_size)
    if loc in message_loc:
        continue
    message_loc.append(loc)

new_carrier = []

carrier_cursor = 0
message_cursor = 0
while carrier_cursor != len(carrier):
    if carrier_cursor in message_loc:
        if carrier[carrier_cursor] != message[message_cursor]: 
            carrier[carrier_cursor] = not carrier[carrier_cursor]
        message_cursor += 1
    new_carrier.append(carrier[carrier_cursor])
    carrier_cursor += 1

get_data = []
for i in message_loc:
    get_data.append(new_carrier[i])

print message # The message itself
print get_data # The reconstructed message