import random

def bit_test():

keep_going = True

while keep_going:

rand_num = random.randint(0, 0xFF)

bits = bin(rand_num)

correct = False

attempts = 1

while not correct:

answer = input('What is {} in decimal? '.format(bits.replace('0b', '').rjust(8, '0')))

attempts += 1

if int(answer) == rand_num:

print('*** Correct! ***')

correct = True

else:

if attempts > 3:

print('The answer is: {}'.format(rand_num))

correct = True

else:

print('Try again.')

def main():

bit_test()

if __name__ == '__main__':

main()