prime counter

gistfile1.txt

def count_primes(n):

    import math

    primes_count = 0

    for i in range(1, n+1, 2):
        if i == 1:
            pass
        if i == 2:
            primes_count += 1
        elif i%2 == 0:
            continue
        else:
            for x in range(3, int(i**0.5)+1, 2):
                if i%x == 0:
                    break
            else:
                primes_count += 1

    print(primes_count)