[Python-Dev] PEP 409 - Accepted! (original) (raw)

Guido van Rossum guido at python.org
Sat Feb 4 05:41:58 CET 2012

There is no new syntax! It's going to remain "raise from ". The types of the expressions are constrained by the runtime, not by the syntax. If either type is unacceptable, a TypeError (with the default context :-) will be raised. None of that is new. Really, there is no new syntax to clarify, only new allowable types for , and a new meaning assigned to those types.

On Fri, Feb 3, 2012 at 7:28 PM, Eli Bendersky <eliben at gmail.com> wrote:

On Fri, Feb 3, 2012 at 22:14, Ethan Furman <ethan at stoneleaf.us> wrote:

Good news!  PEP 409 has been accepted!

Not so good news:  There is no one assigned to Issue 6210 to review the patches... any volunteers? http://bugs.python.org/issue6210 Hi Ethan, I've just looked at PEP 409 online (http://www.python.org/dev/peps/pep-0409/) and I'm not sure where it details the final syntax that was chosen. The "Proposal" section says: "  I proprose going with the second option:  raise NewException from None " This makes no mention of ellipsis / .... Could you please clarify the PEP to make it detail the new syntax and its proposed semantics more precisely? Thanks in advance, Eli

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-- --Guido van Rossum (python.org/~guido)

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