Message 317686 - Python tracker

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In-reply-to
Author	methane
Recipients	Mark.Shannon, benjamin.peterson, eitan.adler, flherne, georg.brandl, lukasz.langa, mbussonn, methane, minrk, ncoghlan, ned.deily, rhettinger, serhiy.storchaka, vstinner
Date	2018年05月25日.17:10:57
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1527268257.29.0.682650639539.issue32911@psf.upfronthosting.co.za>

Content
> B. Revert the feature now for 3.7.0, retargeting for 3.8, and produce a 3.7.0b5 on a somewhat shorter cycle to allow downstream users to adapt to the removal. Please note that it can't be reverted simply. The change was introduced to ease AST-layer optimization (`"abc" + "def"` is not docstring, but `"abcdef"` is docstring.) And we implemented some AST-layer optimization already. There are two ways to revert the change: B1. Just remove `.docstring` attribute and implement hack to distinguish string and docstring in some places. B2. Remove `.docstring` attribute, but introduce `DocString` statement. This was my patch (PR-5927) In case of B2, thirdparty libraries should follow the change anyway. In case of IPython, `DocString(s="spam")` may be replaced with `Expr(Str(s="spam"))` In case of B1, I hadn't tried it yet and I don't know how difficult it is. I'll try but I can't say estimated time for now.

Content

> B. Revert the feature now for 3.7.0, retargeting for 3.8, and produce a 3.7.0b5 on a somewhat shorter cycle to allow downstream users to adapt to the removal.
Please note that it can't be reverted simply.
The change was introduced to ease AST-layer optimization (`"abc" + "def"` is not docstring, but `"abcdef"` is docstring.)
And we implemented some AST-layer optimization already.
There are two ways to revert the change:
B1. Just remove `.docstring` attribute and implement hack to distinguish string and docstring in some places.
B2. Remove `.docstring` attribute, but introduce `DocString` statement. This was my patch (PR-5927)
In case of B2, thirdparty libraries should follow the change anyway.
In case of IPython, `DocString(s="spam")` may be replaced with `Expr(Str(s="spam"))`
In case of B1, I hadn't tried it yet and I don't know how difficult it is. I'll try but I can't say estimated time for now.

History
Date	User	Action	Args
2018年05月25日 17:10:57	methane	set	recipients: + methane, georg.brandl, rhettinger, ncoghlan, vstinner, benjamin.peterson, ned.deily, lukasz.langa, Mark.Shannon, serhiy.storchaka, eitan.adler, minrk, mbussonn, flherne
2018年05月25日 17:10:57	methane	set	messageid: <1527268257.29.0.682650639539.issue32911@psf.upfronthosting.co.za>
2018年05月25日 17:10:57	methane	link	issue32911 messages
2018年05月25日 17:10:57	methane	create

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