Python memory deallocate

Diez B. Roggisch deets at
Thu May 11 17:25:52 CEST 2006

mardif wrote:

> In python 2.5 this was resolved, ok, but i can't use any python version
> then 2.3.5.
> This project was initializated with this version, and now it can be
> dangerous change version, even because I use McMillan installer for
> compile e build an executable.
> So, my initial window is a "menu window", when i can choose, for
> example, upload foto for print, or create an object as PhotoAlbum.
> If i'will choose PhotoAlbum, it will allocate 200Mb. well!  if i decide
> to abort this work, i will return to initial window. and if i will
> click in PhotoAlbum ago, the memory will increase to 350-400Mb.
> It's that!!! I don't understand why!!! when i abort the work the first
> time, i call
> app.Destroy()
> del app
> Why Python ( or GarbageCollector, or.... ) don't deallocate memory??
> If it's not possibile, why python don't reuse the memory "cached"?

Because you might have kept references somewhere. And nobody knows where
without you showing code. 

Lots of long-running memory intensive apps such as ZODB are written in 
python - so I doubt that it is a problem of python itself, but instead of
your program. Try and reproduce the behavior with a self-contained script -
if that still exposes the problem we can look at it maybe fixpython if

Besides: _if_ it was a python error, you'd have to move to a knew python
version anyway, won't you? And just because you McMillan Installer won't
work doesn't mean that YOU can't try python2.4 or even 2.5, and see if it
works better.


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