[EMAIL PROTECTED] writes: > Chris Curvey wrote: >> I need to ensure that there is only one instance of my python class on >> my machine at a given time. (Not within an interpreter -- that would >> just be a singleton -- but on the machine.) These instances are >> created and destroyed, but there can be only one at a time. >> >> So when my class is instantiated, I create a little lock file, and I >> have a __del__ method that deletes the lock file. Unfortunately, there >> seem to be some circumstances where my lock file is not getting >> deleted. Then all the jobs that need that "special" class start >> queueing up requests, and I get phone calls in the middle of the night. > > For a reasonably portable solution, leave the lock file open. > On most systems, you cannot delete an open file,
Uh, you can on unix -- what else did you have in mind for "most systems"? Cheers, mwh -- Well, yes. I don't think I'd put something like "penchant for anal play" and "able to wield a buttplug" in a CV unless it was relevant to the gig being applied for... -- Matt McLeod, asr -- http://mail.python.org/mailman/listinfo/python-list
