naive prime numbers generator

primes.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from itertools import count, takewhile, islice

def primes():
    yield 2
    primes = [2]
    for i in count(3, step=2):
        if all(i % prime != 0 for prime in primes):
            yield i
            primes.append(i)

# prime numbers less than 30
print list(takewhile(lambda x: x<30, primes()))
# 10 prime numbers
print list(islice(primes(), 10))