primes.py

from itertools import islice

def ints_from(start=2, step=1):
    next = start
    while True:
         next += step
         yield next

def take(n, iterable):
    """Return first n items of the iterable as a list
        From Itertools Recipes:
            https://docs.python.org/3/library/itertools.html#itertools-recipes
    """
    return list(islice(iterable, n))

def primes():
    "Compute primes using the Sieve Of Eratosthenes method"
    primes_found = set()
    for num in ints_from(start=2):
        if not any(num % known_prime == 0 for known_prime in primes_found):
            primes_found.add(num)
            yield num

if __name__ == '__main__':
    print(take(100, primes()))