[Python-Dev] PEP for allowing 'raise NewException from None'

Nick Coghlan ncoghlan at gmail.com
Mon Jan 30 07:23:01 CET 2012

On Mon, Jan 30, 2012 at 2:51 PM, Ethan Furman <ethan at stoneleaf.us> wrote:
> raise ... from ... is not disallowed outside a try block, but this
> behavior is not guaranteed to remain.
> ------------------------------------------------------------------
> Should that last disclaimer be there?  Should it be changed?

I'd leave it out - the original PEP didn't disallow it, enforcing it
would be annoying, and it's easy enough to pick up if you happen to
happen to care (it will mean __cause__ is set along with __context ==


Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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