http://www.meetup.com/Python-Users-Berlin-PUB/events/160283032/

bowling.py

# http://codingdojo.org/cgi-bin/wiki.pl?KataBowling

# "5/5/5/5/5/5/5/5/5/5/5"
rolls = [5 for x in range(21)]

# "XXXXXXXXXXXX"
rolls = [10 for x in range(12)]

# "9-9-9-9-9-9-9-9-9-9-"
rolls = zip([9 for x in range(10)], [0 for x in range(10)])
rolls = [e for l in rolls for e in l]

def score(rolls, prev=0):
    if len(rolls) == 3:
        return sum(rolls)
    roll = rolls.pop(0)
    if roll == 10:
        return roll + sum(rolls[0:2]) + score(rolls)
    elif roll + prev == 10:
        return roll + rolls[0] + score(rolls)
    else:
        return roll + score(rolls, roll if prev == 0 else 0)

print rolls
print score(rolls)