Sleep Sort with ThreadPool

sleepsort.py

from concurrent.futures import ThreadPoolExecutor
import time
import timeit
import random


def sleepsort(lst):
    """
    Use ThreadPool to execute each thread. Have it sleep for val/100 and then
    add itself to results array.
    """
    result = []

    def sleep(num, min_val):
        real_sleep = (num - min_val) / 100
        time.sleep(real_sleep)
        result.append(num)

    min_val = 0
    max_val = 0
    for elm in lst:
        if elm < min_val:
            min_val = elm

        if elm > max_val:
            max_val = elm

    with ThreadPoolExecutor(max_workers = len(lst)) as executor:
        for elm in lst:
            executor.submit(sleep, elm, min_val)

    return result


def generate_random(n, max_range):
    """
    Generates a list of random integers from range 0 to maxrange
    """
    result = []
    for i in range(n):
        result.append(random.randrange(1, max_range))

    return result

if __name__ == '__main__':
    lst = generate_random(100, 3)
    sleep_time = timeit.timeit(lambda: sleepsort(lst), number=100)
    print("sleep took: " + str(sleep_time))