from concurrent.futures import ProcessPoolExecutor
from mc import count_hits
def estimate_pi_parallel(n_points, pool, n_workers):
    """Делит работу на n_workers порций и считает их в пуле процессов."""
    chunk = n_points // n_workers
    sizes = [chunk] * n_workers
    sizes[-1] += n_points - chunk * n_workers # остаток — последней порции
    seeds = range(1, n_workers + 1) # разные зёрна у порций
    hits = sum(pool.map(count_hits, sizes, seeds))
    return 4 * hits / n_points