RE: Logging in __del__()

[Robert Rawlins]

Hi Fredrik,

When the application is running, or when it is shutting down?

This is interesting, I did a test where I explicitly destroyed the instance
using 'del my_instance' while the application was running and no error was
thrown.

It would see you are right, when the application ends it kills the logging
module before my classes. I think you're on the right approach just
try/except it and leave it be.

Am I right in thinking that Python destroys instances of classes when it
deems they are no longer needed? I shouldn't have to explicitly delete the
classes, right?

Thanks Fredrik,

Robert

[Vinay Sajip]

Re: Logging in __del__()

On Jul 15, 1:51 pm, "Robert Rawlins"
<robert.rawl... @thinkbluemedia .co.ukwrote:

>
Am I right in thinking that Python destroys instances of classes when it
deems they are no longer needed? I shouldn't have to explicitly delete the
classes, right?

Python uses reference counting with a cycle detector, but the
detector's behaviour is different if there are finalizers (__del__) -
see

http://www.python.org/doc/ext/refcounts.html

Regards,

Vinay Sajip

[Robert Rawlins]

RE: Logging in __del__()

Hi Vinay,

Python uses reference counting with a cycle detector, but the
detector's behaviour is different if there are finalizers (__del__) -
see
>

http://www.python.org/doc/ext/refcounts.html

>

Thank you for the link, that certainly explains a great deal.

So, am I right to assume that python will still handle its garbage disposal
if I implement __del__(), it just handles circular references in a slightly
different way, but to the same effect. Right?

Cheers,

Robert

[Marc 'BlackJack' Rintsch]

Re: Logging in __del__()

On Wed, 16 Jul 2008 12:38:50 +0100, Robert Rawlins wrote:

So, am I right to assume that python will still handle its garbage disposal
if I implement __del__(), it just handles circular references in a slightly
different way, but to the same effect. Right?

No. Circular references in objects with a `__del__()` implementation are
not collected! Why are you using `__del__()` anyway? Are you aware of
the promises that are *not* made! It's not guaranteed when the method
is called nor if it is called at all!

Ciao,
Marc 'BlackJack' Rintsch