thread example question

Wed Jan 18 00:22:20 EST 2012

Can any idea help me figure out why the following output is sequential? I'm
running this example on a 4 core system.
I would expect the output to look random.
import _thread as thread
import time
class thread_counter(object):
 def __init__(self, thr_cnt, sleep_int):
 self.thr_cnt = thr_cnt
 self.sleep_int = sleep_int
def counter(myId, count):
 for i in range(count):
 time.sleep(1)
 print('[{}] => {}'.format(myId, i))
def main():
 for i in range(5):
 thread.start_new_thread(counter, (i, 5))
 time.sleep(6)
 print('Main thread exiting..')
if __name__ == '__main__':
 main()
[0] => 0
[0] => 1
[0] => 2
[0] => 3
[0] => 4
Main thread exiting..
[1] => 0
[1] => 1
[1] => 2
[1] => 3
[1] => 4
Main thread exiting..
[2] => 0
[2] => 1
[2] => 2
[2] => 3
[2] => 4
Main thread exiting..
[3] => 0
[3] => 1
[3] => 2
[3] => 3
[3] => 4
Main thread exiting..
[4] => 0
[4] => 1
[4] => 2
[4] => 3
[4] => 4
Main thread exiting..
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