prime log ratio thingy

#!/usr/bin/env python

# Problem Set 1
# Name: Tony Baldwin
# Collaborators: 0
# Time: (start 4pm Sat 20110903 / end ??)

from math import *

n = input("Please enter a number: ")
primes = [2]
logs = [0.301029995664]
q = 3
while q < n:
    for i in primes:
        if q % i == 0:
            break
    else:
        l = log10(q)
        primes.append(q)
        logs.append(l)
    q += 2

slog = reduce(lambda y,x: x+y, logs)
print("The sum of the logs of the prime numbers less than or equal to %s is %s." % (n, slog))
rat =(slog / n)
print("The ratio of these values is %s / %s, which is equal to %s." % (slog, n, rat))
print("Have a nice day.")
exit