On Fri, Jun 5, 2009 at 6:56 PM, Robert Dailey<rcdai...@gmail.com> wrote:
> Is it possible to create an object in Python that will clean itself up
> at function exit? I realize destruction of objects may not occur
> immediately and can be garbage collected, but this functionality would
> still be great to have. Consider the following function:
>
> def do_stuff():
> foo = scope_object()
> # Do stuff...
> foo.Cleanup()
>
> It would be nice to avoid the explicit "Cleanup()" call above, and
> have 'foo' just act as if it has a C++ destructor and evoke some
> method at the exit point of a function.
This is exactly what the new `with` statement lets you do. You just
need to define an appropriate context manager. With one, you can code
that as:
def do_stuff():
with scope_object() as foo:
#do stuff
More info: http://www.python.org/dev/peps/pep-0343/
Cheers,
Chris
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