number_in_string  = "73167176531330624919225119674426574742355349194934"
number_in_string += "96983520312774506326239578318016984801869478851843"
number_in_string += "85861560789112949495459501737958331952853208805511"
number_in_string += "12540698747158523863050715693290963295227443043557"
number_in_string += "66896648950445244523161731856403098711121722383113"
number_in_string += "62229893423380308135336276614282806444486645238749"
number_in_string += "30358907296290491560440772390713810515859307960866"
number_in_string += "70172427121883998797908792274921901699720888093776"
number_in_string += "65727333001053367881220235421809751254540594752243"
number_in_string += "52584907711670556013604839586446706324415722155397"
number_in_string += "53697817977846174064955149290862569321978468622482"
number_in_string += "83972241375657056057490261407972968652414535100474"
number_in_string += "82166370484403199890008895243450658541227588666881"
number_in_string += "16427171479924442928230863465674813919123162824586"
number_in_string += "17866458359124566529476545682848912883142607690042"
number_in_string += "24219022671055626321111109370544217506941658960408"
number_in_string += "07198403850962455444362981230987879927244284909188"
number_in_string += "84580156166097919133875499200524063689912560717606"
number_in_string += "05886116467109405077541002256983155200055935729725"
number_in_string += "71636269561882670428252483600823257530420752963450"

length_of_number = len(number_in_string)
st_idx, end_idx = 0, 12

def get_product(st_idx, end_idx, string):
    idx, product = st_idx, 1
    while idx <= end_idx:
        product *= int(string[idx])
        idx += 1
    return product

largest_product = {"product": 0, "string": ""}
while end_idx < length_of_number:
    product = get_product(st_idx, end_idx, number_in_string)
    if product > largest_product["product"]:
        print product, number_in_string[st_idx:end_idx], st_idx, end_idx
        largest_product["product"] = product
        largest_product["string"] = number_in_string[st_idx:end_idx]
    st_idx += 1
    end_idx += 1

print largest_product
