8.py

def take(n, digits):
    limit = len(digits)
    start = 0
    while (start + n) < limit:
        yield tuple(int(x) for x in digits[start:start + n])
        start += 1

def multiply(numbers):
    res = 1
    for number in numbers:
        res *= number
    return res

def problem():
    """
    >>> problem()
    40824
    """
    digits = ('73167176531330624919225119674426574742355349194934'
        '96983520312774506326239578318016984801869478851843'
        '85861560789112949495459501737958331952853208805511'
        '12540698747158523863050715693290963295227443043557'
        '66896648950445244523161731856403098711121722383113'
        '62229893423380308135336276614282806444486645238749'
        '30358907296290491560440772390713810515859307960866'
        '70172427121883998797908792274921901699720888093776'
        '65727333001053367881220235421809751254540594752243'
        '52584907711670556013604839586446706324415722155397'
        '53697817977846174064955149290862569321978468622482'
        '83972241375657056057490261407972968652414535100474'
        '82166370484403199890008895243450658541227588666881'
        '16427171479924442928230863465674813919123162824586'
        '17866458359124566529476545682848912883142607690042'
        '24219022671055626321111109370544217506941658960408'
        '07198403850962455444362981230987879927244284909188'
        '84580156166097919133875499200524063689912560717606'
        '05886116467109405077541002256983155200055935729725'
        '71636269561882670428252483600823257530420752963450')
    biggest = 0
    for group in take(5, digits):
        result = multiply(group)
        if result > biggest:
            biggest = result
    return biggest