Test Python's threading module

test_thread.py

import threading
import time
import random


class MyThread(threading.Thread):

    def __init__(self, num):
        self.num = num
        threading.Thread.__init__(self)

    def run(self):
        for count_run in range(5):
            time.sleep((random.random() * 3) + 0.5)
            print("Thread %d - Run %d" % (self.num, count_run + 1))
            for i in range(2000000):
                pass


mt1 = MyThread(1)
mt2 = MyThread(2)
mt3 = MyThread(3)
mt4 = MyThread(4)

mt1.start()
mt2.start()
mt3.start()
mt4.start()