[Python-Dev] (name := expression) doesn't fit the narrative of PEP 20 (original) (raw)
Steve Holden steve at holdenweb.com
Thu Apr 26 05:59:43 EDT 2018
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On Wed, Apr 25, 2018 at 9:55 PM, Łukasz Langa <lukasz at langa.pl> wrote:
> On 25 Apr, 2018, at 1:28 PM, Guido van Rossum <guido at python.org> wrote: > > You don't seem to grasp the usability improvements this will give. I hear you but at this point appeals to Python's "Zen" don't help you. This reads dismissive to me. I did read the PEP and followed the discussion on python-dev. I referred to PEP 20 because it distills what's unique about the value proposition of Python. It's our shared vocabulary. Perhaps so, but no PEP is chiselled in stone, and I would suggest that PEP 20 is the least authoritative from a didactic point of view.
Can you address the specific criticism I had? To paraphrase it without PEP 20 jargon:
> (name := expression) makes code less uniform. It inserts more information > into a place that is already heavily packed with information (logic tests). One could argue the same about list comprehensions if one chose: they make code denser (by expressing the same algorithm in a shorter spelling). I'm not sure what you mean by "less uniform." -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20180426/a3e1c9df/attachment.html>
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