largest palindrome product of two 7 digit numbers

digits = 7

largest = 0

startingNum = 10**digits - 1
a,b = startingNum, startingNum

while b > 1:
    prod = a*b
    temp = prod
    rev = 0
    while temp >= 1:
        rev = rev * 10 + temp % 10
        temp = int(temp / 10)

    if rev == prod:
        if prod > largest:
            print a, b, prod
        largest = prod if prod > largest else largest

    a -= 1

    if a < 1 or prod < largest:
        b -= 1
        a = startingNum - b
        if a*b < largest:
            break

print largest