리스트 안의 것들을 multiprocessing으로 처리해서 저장해주는 기능.

manager.py

import multiprocessing
import time

def square(result, x):
    result.append(x*x)

if __name__ == "__main__":
    # 1. Prepare multiprocessing
    pool = multiprocessing.Pool(8)
    m = multiprocessing.Manager()
    result = m.list()
    
    # 2. Prepare input list
    input_values = [x for x in range(1, 10001)]
    
    # 3. Run multiprocessing
    start_time = time.time()
    starmap_list = [(result, x) for x in input_values]
    pool.starmap(square, starmap_list)
    pool.close()
    pool.join()
    print(time.time() - start_time)