Thread Based Parallelism - Thread in a Subclass
1 import threading
2 import time
3
4 exit_Flag = 0
5
6 class myThread (threading.Thread):
7 def __init__(self, threadID, name, counter):
8 threading.Thread.__init__(self)
9 self.threadID = threadID
10 self.name = name
11 self.counter = counter
12 def run(self):
13 print ("Starting " + self.name + "\n")
14 print_time(self.name, self.counter, 5)
15 print ("Exiting " + self.name + "\n")
16
17 def print_time(threadName, delay, counter):
18 while counter:
19 if exit_Flag:
20 thread.exit()
21 time.sleep(delay)
22 print ("%s: %s" % (threadName, time.ctime(time.time())))
23 counter -= 1
24
25 if __name__ == '__main__':
26 # Create two threads
27 thread1 = myThread(1, "Thread-1", 1)
28 thread2 = myThread(2, "Thread-2", 2)
29
30 # Start the Threads created
31 thread1.start()
32 thread2.start()
33
34 # Wait for all thread to complete
35 thread1.join()
36 thread2.join()
37
38 print ("Exiting Main Thread")
39
40 Output,
41 Starting Thread-1
42 Starting Thread-2
43
44 Thread-1: Thu Feb 8 15:08:47 2018
45 Thread-1: Thu Feb 8 15:08:48 2018
46 Thread-2: Thu Feb 8 15:08:48 2018
47 Thread-1: Thu Feb 8 15:08:49 2018
48 Thread-2: Thu Feb 8 15:08:50 2018
49 Thread-1: Thu Feb 8 15:08:50 2018
50 Thread-1: Thu Feb 8 15:08:51 2018
51 Exiting Thread-1
52
53 Thread-2: Thu Feb 8 15:08:52 2018
54 Thread-2: Thu Feb 8 15:08:54 2018
55 Thread-2: Thu Feb 8 15:08:56 2018
56 Exiting Thread-2
57
58 Exiting Main Thread
