Prime number generator in Python

primes.py

import itertools

def primes():

    def sieve(numbers):
        try:
            n = next(numbers)
            yield n
            yield from sieve(filter(lambda m: m%n!=0, numbers))
        except StopIteration:
            return

    return sift(itertools.count(2))


first_hundred_primes = list(itertools.islice(primes(), 100))