Thread Based Parallelism - Thread in a Subclass

　　Thread Based Parallelism - Thread in a Subclass

　　
 1     import threading
     import time

     exit_Flag = 0

     class myThread (threading.Thread):
         def __init__(self, threadID, name, counter):
             threading.Thread.__init__(self)
             self.threadID = threadID
             self.name = name
             self.counter = counter
         def run(self):
             print ("Starting " + self.name + "\n")
             print_time(self.name, self.counter, 5)
             print ("Exiting " + self.name + "\n")

     def print_time(threadName, delay, counter):
         while counter:
             if exit_Flag:
                 thread.exit()
             time.sleep(delay)
             print ("%s: %s" % (threadName, time.ctime(time.time())))
             counter -= 1

     if __name__ == '__main__':
         # Create two threads
         thread1 = myThread(1, "Thread-1", 1)
         thread2 = myThread(2, "Thread-2", 2)

         # Start the Threads created
         thread1.start()
         thread2.start()

         # Wait for all thread to complete
         thread1.join()
         thread2.join()

         print ("Exiting Main Thread")

     Output,
         Starting Thread-1
         Starting Thread-2

         Thread-1: Thu Feb  8 15:08:47 2018
         Thread-1: Thu Feb  8 15:08:48 2018
         Thread-2: Thu Feb  8 15:08:48 2018
         Thread-1: Thu Feb  8 15:08:49 2018
         Thread-2: Thu Feb  8 15:08:50 2018
         Thread-1: Thu Feb  8 15:08:50 2018
         Thread-1: Thu Feb  8 15:08:51 2018
         Exiting Thread-1

         Thread-2: Thu Feb  8 15:08:52 2018
         Thread-2: Thu Feb  8 15:08:54 2018
         Thread-2: Thu Feb  8 15:08:56 2018
         Exiting Thread-2

         Exiting Main Thread