threads_io_bound.py

import threading
import time

# An I/O intensive calculation.
# We simulate it with sleep.
def heavy(n, myid):
    time.sleep(2)
    print(myid, "is done")

def threaded(n):
    threads = []

    for i in range(n):
        t = threading.Thread(target=heavy, args=(500,i,))
        threads.append(t)
        t.start()

    for t in threads:
        t.join()

if __name__ == "__main__":
    start = time.time()
    threaded(80)
    end = time.time()
    print("Took: ", end - start)

# This takes a little over 2s on my system