hex quiz

##
# Train your hex. Note the adjustable range and step.

def hexquiz(therange=(0x0,0x100),step=0x20, cheatsheet=0x0):
    """ cheatsheet=0x1 to view answers before taking quiz """
    from random import randrange
    pile = [i for i in range(therange[0x0],therange[0x1],step)]

    if cheatsheet == 0x1:
        hexcheatsheet(therange,step)

    while len(pile) > 0x0:
        answer = pile[randrange(len(pile))]
        print hex(answer)
        guess = int(raw_input(''))

        if guess == answer:     # if answer is correct,
            print 'CORRECT'     # remove card from pile
            pile.remove(answer)

        elif guess != answer:   # if answer is incorrect,
            print 'INCORRECT'   # do not remove from pile and
            pile.append(answer) # add an extra copy

def hexcheatsheet(therange=(0x0,0x100),step=0x10):
    print 'CHEATSHEET:'
    for i in range(therange[0x0],therange[0x1],step):
        print hex(i), '-', i
    print ''

hexquiz(cheatsheet=0x1)