On 22 Feb 2014 09:59, "Greg Ewing" <greg.ew...@canterbury.ac.nz> wrote: > > Nick Coghlan wrote: >> >> As Chris later noted, you likely *could* still implement expression >> local name binding for an except expression without a full closure, it >> would just be rather difficult. > > > I'm still not convinced it would be all *that* difficult. > Seems to me it would be semantically equivalent to > renaming the inner variable and adding a finally clause > to unbind it. Is there something I'm missing?
Dealing with references from nested closures is the hard part. It's not impossible to solve, but would require introducing a new kind of scope not previously seen in Python, which is a rather dubious suggestion when the existing closure semantics can typically do the job. However, we're getting off topic for python-dev. Cheers, Nick. > > -- > Greg > > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: https://mail.python.org/mailman/options/python-dev/ncoghlan%40gmail.com
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