Fabian Steiner wrote: > I am currently wondering how to write something like an "event loop". > For example, if I want to write a function that checks whether a file > was added or removed in a directory I would think of a "while 1: ..." > construct that checks the mtime of the directory. Is this the right way > to achieve the exepected result or are there any better ways?
That's fine for a start, provided you always insert a small time.sleep() call so that you don't use up all the CPU time wastefully checking for something that happens very rarely. In the end, it's a tradeoff between CPU usage and "latency", because if you use (for example) time.sleep(5), you won't waste much time but you will also take up to 5 seconds to notice that the directory has changed. Usually values like 0.1 (100ms) work well for things that need a quick response, while 2s works nicely for things that don't. Even Python is pretty unnoticeable if it wakes up only every two seconds for a brief bit of processing. -Peter -- http://mail.python.org/mailman/listinfo/python-list