[Python-Dev] Requesting pronouncement on PEP 463: Exception-catching expressions (original) (raw)

Victor Stinner victor.stinner at gmail.com
Thu Mar 13 10:15:22 CET 2014

Hi,

2014-03-12 18:09 GMT+01:00 Guido van Rossum <guido at python.org>:

I want to reject this PEP. (...) this was a well-written and well-researched PEP, and I think you've done a great job moderating the discussion, collecting objections, reviewing alternatives, and everything else that is required to turn a heated debate into a PEP. Well done Chris (and everyone who helped), and good luck with your next PEP!

I spend many weeks to work (write the PEP and implement them) on the following PEPs and Guido rejected them:

It's hard to accept that a wonderful idea at a first look is not a good idea. Some months later, I now agree and see issues of my PEPs. The PEP process ensures that the Python "language" (+ stdlib) keeps consistent and well designed.

Even if a PEP is rejected, it becomes the best reference if someone requests the same or a similar feature some months or years later. Rejected PEPs explain almost how the Python language was designed.

For thanks Chris, and I hope that it's not too hard for you to accept the fact that your "inline try/except" idea is maybe not as good as you expected :-)

Victor

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