[Python-Dev] should list's call to __len__ swallow SystemExit?

[Karen Tracey]

On Wed, Jan 14, 2009 at 6:12 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:

> Dino Viehland wrote:
> > We had a bug reported that effectively boils down to we're not
> > swallowing exceptions when list calls __len__
> > (
> http://www.codeplex.com/WorkItem/View.aspx?ProjectName=IronPython&WorkItemId=20598
> ).
> >
> >
> > We can obviously make the change to catch exceptions here in
> > IronPython even if it seems like a bad idea to me ☺  But CPython
> > seems to catch not only normal exceptions, but also SystemExit.  It
> > seems like there's been a move away from this so I thought I'd
> > mention it here.  I tested it on 2.6.1 and 3.0.
>
> I'd agree that CPython appears to be the one misbehaving here, rather
> than IronPython.
>
> Opening a new issue at bugs.python.org would be the best way forward.
>

There is already a bug for this, I believe:

http://bugs.python.org/issue1242657

Karen
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