On Wed, Dec 4, 2019 at 5:22 PM Kyle Stanley <aeros...@gmail.com> wrote:
>
> > BTW, I think 2to3 can help to move from 2&3 code to 3-only code.
>
> > Instead, we can do:
>
> > * Don't recommend u-prefix except in Python 2&3 code.
> > * Provide a tool to remove the u-prefix.
>
> +1, this seems like the smoothest way of handling it and has very minimal 
> impact on users. In 5+ years from now as u-strings become increasingly rare, 
> we can consider a long term deprecation process. In the meantime, any tools 
> we can provide to automate the process of converting them will make the 
> transition that much easier.
>

The first one is already the case. PEP 414 reintroduced the u"..."
literal form, specifically as a porting tool. Given that it has
absolutely zero value in pure Py3 code, it can be assumed to be not
recommended outside of 2/3 compatibility.

I'm not sure how much value there'd be in a tool *just* to remove the
u prefix, but perhaps a suite of 2to3-like fixers for "hey, now that
you're dropping Python 2 support, here's some things you can take
advantage of". For instance, "class Foo(object):" can become "class
Foo:", and many uses of super() can become the zero-argument form. +1
on getting such a tool started.

ChrisA
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