highest palindrome with 3 digit numbers in python

Question

In problem 4 from http://projecteuler.net/ it says:

A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-d

Answer 1

ReThink: efficiency and performance

def palindrome(n):    

    maxNumberWithNDigits = int('9' * n) #find the max number with n digits

    product = maxNumberWithNDigits * maxNumberWithNDigits 

    #Since we are looking the max, stop on the first match

    while True:        
        if str(product) == str(product)[::-1]: break;

        product-=1

    return product

start=time.time()
palindrome(3)
end=time.time()-start

palindrome...: 997799, 0.000138998031616 secs