Baz Walter wrote:
> Before changing the name 'mainwindow' to 'mainwidget' it reports:
>
> Widgets left: 0 Max widgets: 2
> Widgets left: 0 Max widgets: 149 (full program)
>
> Afterwards it reports:
>
> Widgets left: 1 Max widgets: 2
> Widgets left: 146 Max widgets: 149 (full program)
So what you're concerned about is the lack of cleanup during interpreter
shutdown, not a true leak (which would result in "Max widgets" growing
towards infinity).
The problem here is that you're relying on Python's GC to remove things
in a given order during shutdown, something that may or may not happen
depending on lots of things that you cannot control:
http://www.python.org/doc/essays/cleanup/
(Note the repeated use of "In an order determined by the dictionary
hashing of the names" in that article.)
The only way to get *predictable* shutdown behaviour in situations like
this is to clean things up yourself. But in this case, you might as
well leave the cleanup to the OS.
</F>
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