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[Python-ideas] Delayed Execution via Keyword
David Mertzmertz at gnosis.cx
Fri Feb 17 17:09:26 EST 2017
That was a problem with the colon that occurred to me. I think it can't betokenized in function annotations.Plus I still think the no-colon looks better. But that's bikeshedding. Alsoother words are plausible. I like lazy even more than delayed, I think.Still, I'd love the construct whatever the exact spelling.On Feb 17, 2017 12:41 PM, "Joshua Morton" <joshua.morton13 at gmail.com> wrote:> I think it could even be true without, but the colon may cause ambiguity> problems with function annotations.>> def foo(delayed: delayed: 1 + 2)>> is a bit odd, especially if `delayed` is chainable.>> --Josh>> On Fri, Feb 17, 2017 at 3:32 PM Joseph Hackman <josephhackman at gmail.com>> wrote:>>> Couldn't the same thing be true of delayed if it is always followed by a>> colon?>>>> I.e.>> delayed=1>> x= delayed: slow_function()>> print(delayed) # prints 1>>>> -Joseph>>>> On Feb 17, 2017, at 2:39 PM, Mark E. Haase <mehaase at gmail.com> wrote:>>>> On Fri, Feb 17, 2017 at 1:55 PM, Joshua Morton <joshua.morton13 at gmail.com>> > wrote:>>>> but I'm wondering how common async and await were when that was proposed>> and accepted?>>>>>> Actually, "async" and "await" are backwards compatible due to a clever>> tokenizer hack. The "async" keyword may only appear in a few places (e.g.>> async def), and it is treated as a name anywhere else.The "await" keyword>> may only appear inside an "async def" and is treated as a name everywhere>> else. Therefore...>>>> >>> async = 1>> >>> await = 1>>>> ...these are both valid in Python 3.5. This example is helpful when>> proposing new keywords.>>>> More info:https://www.python.org/dev/peps/pep-0492/#transition-plan>>>>>> _______________________________________________>> Python-ideas mailing list>>Python-ideas at python.org>>https://mail.python.org/mailman/listinfo/python-ideas>> Code of Conduct:http://python.org/psf/codeofconduct/>>>> _______________________________________________>> Python-ideas mailing list>>Python-ideas at python.org>>https://mail.python.org/mailman/listinfo/python-ideas>> Code of Conduct:http://python.org/psf/codeofconduct/>>> _______________________________________________> Python-ideas mailing list>Python-ideas at python.org>https://mail.python.org/mailman/listinfo/python-ideas> Code of Conduct:http://python.org/psf/codeofconduct/>-------------- next part --------------An HTML attachment was scrubbed...URL: <http://mail.python.org/pipermail/python-ideas/attachments/20170217/fb8704b3/attachment.html>
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