Those examples are really helpful and I'm pretty sure they'll do what I need, I'll just have to play with them a little more.
I do have a question about one of the examples though! Specifically this part: 4 class Operation(threading._Timer): 5 def __init__(self, *args, **kwargs): 6 threading._Timer.__init__(self, *args, **kwargs) 7 self.setDaemon(True) So in trying to understand the class definition, I found this: "In Python, the ancestor of a class is simply listed in parentheses immediately after the class name." So does that mean that Operation is similar or the same as say: Operation = threading._Timer? Then I'm a little confused by the * and ** - they look just like the pointer and pointer to a pointer in C++, but do they perform the same function in python? TIA, Wayne On Mon, May 19, 2008 at 8:23 PM, Kent Johnson <[EMAIL PROTECTED]> wrote: > On Mon, May 19, 2008 at 5:28 PM, W W <[EMAIL PROTECTED]> wrote: >> Now, when I look at that example and try to translate the timeout to >> what I think is going on "behind the scenes" I'm pretty sure it spawns >> a thread that does something similar to this: >> >> 1 import time >> 2 >> 3 def timer(end, exe): >> 4 start = time.time() >> 5 while True: >> 6 now = time.time() >> 7 if (now - start) >= end: >> 8 break >> 9 exe() >> 10 >> 11 def execute_this(): >> 12 for x in range(1, 10): >> 13 print x >> 14 >> 15 timer(5, execute_this) >> >> Am I correct? Is there a python built-in for this? Where should I go >> to learn more? Is there anything "wrong" with using a function like >> this? > > You are pretty much on the right track but you should put a > time.sleep() in your loop or it will chew up all available CPU time. > Even better, figure out how long you need to sleep. > > The sched module in the standard library might help though it doesn't > seem to do any threading. Also look at these recipes: > http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/496800 > http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/114644 > > Kent > -- To be considered stupid and to be told so is more painful than being called gluttonous, mendacious, violent, lascivious, lazy, cowardly: every weakness, every vice, has found its defenders, its rhetoric, its ennoblement and exaltation, but stupidity hasn't. - Primo Levi _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
