On 24/02/2008, Dave Kuhlman <[EMAIL PROTECTED]> wrote: > On Sun, Feb 24, 2008 at 04:14:02PM +0000, dave selby wrote: > > I have created a list of class instances, works a treat. I need to be > > able to re __init__ the instances on a SIGHUP so I guess the best way > > is to destroy them & re make them. > > > > err ... how do I destroy an instance ? > > > It is not likely that you need to. > > When your instances are no longer referenced (nothing points to > them, so to speak), they will be garbage collected. Here is an > illustraction -- This code collects three instances of class > MyClass in a list, then later "forgets" them: > > myinstances = [] > myinstances.append(MyClass()) > myinstances.append(MyClass()) > myinstances.append(MyClass()) > o > o > o > myinstances = [] > > Or, if there are resources that are held onto by each instance and > need to be cleaned up, for example an open file. Then do something > like the following: > > for inst in myinstances: > inst.cleanup() > myinstances = [] > > where "cleanup" is a method implemented in each class that needs to > cleanup/release resources. > > But, remember that, if there are objects that are referred to by > your instances and *only* your instances, then when your instances > go away (are garbage collected), those other things will also > automatically go away, too. No extra work is needed. > > It takes a little thought before you will figure out that this is > something that needs (almost) no thought.
Thanks for replying, I have been away from Python for quite a while, being dabbleing in C++ on a KDE4 app. I Forgot just how friendly Python is :) Cheers Dave > > Hope this helps. > > - Dave > > > -- > Dave Kuhlman > http://www.rexx.com/~dkuhlman > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > -- Please avoid sending me Word or PowerPoint attachments. See http://www.gnu.org/philosophy/no-word-attachments.html _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
