Threading question

[Torsten Marek]

Peter Hansen schrieb:
> Torsten Marek wrote:
> 
>> I have a simple question about threads in Python. I am starting  a 
>> number of threads in my program and I want print out the amount of 
>> time needed after all threads stopped. Do I need to explictly join the 
>> threads, set a condition or is it possible to somehow work with 
>> try/finally like that:
>>
>> try:
>>     for i in range(0, num_threads):
>>         s = MyThread()
>>         s.start()
>> finally:
>>     print "all threads finished"
> 
> 
> The other threads are running in, well, other threads, so you
> won't see any effect on the above thread when they end.  Therefore
> you can't get much mileage out of a finally clause.  A .join()
> is definitely the way to go here.
> 
> -Peter
I found another way to go for now, which works fine for me.
Since the threading module sets sys.exitfunc, I just do:

def my_exitfunc():
	global thread_wait
	thread_wait()
	# own stuff follows here...

thread_wait = sys.exitfunc
sys.exitfunc = my_exitfunc

That's maybe not very clean, but it's just a minor script I wrote, so I 
don't want to waste to much time on it;-)

Anyway, thanks for the answer

Torsten