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How to Generate Primes with a Generator in Python

Generate prime numbers up to a limit using the Sieve of Eratosthenes wrapped in a generator expression for lazy evaluation.

generators sieve primes

Python

def prime_generator(limit):
    sieve = [True] * (limit + 1)
    sieve[0] = sieve[1] = False

    for i in range(2, int(limit ** 0.5) + 1):
        if sieve[i]:
            for j in range(i * i, limit + 1, i):
                sieve[j] = False

    return (num for num, is_prime in enumerate(sieve) if is_prime)


if __n…

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