starting point for discussing sequential vs concurrent vs parallel

seq_con_par.py

from multiprocessing import pool
from timeit import timeit


def smap(func, stuff):
    return list(map(func, stuff))


def cmap(func, stuff):
    with pool.ThreadPool(processes=4) as p:
        return p.map(func, stuff)


def pmap(func, stuff):
    with pool.Pool(processes=4) as p:
        return p.map(func, stuff)


def double(x):
    return x * 2


def time_map(which_map):
    print(
        timeit(
            'map(double, nums)',
            number=100,
            globals={
                'map': which_map,
                'double': double,
                'nums': list(range(1000))
            }))


def main():
    for m in [smap, cmap, pmap]:
        time_map(m)


if __name__ == '__main__':
    main()