On Sat, Feb 25, 2012 at 22:13, Guido van Rossum <guido@python.org> wrote:
If this can encourage more projects to support Python 3 (even if it's
only 3.3 and later) and hence improve adoption of Python 3, I'm all
for it.


+1 from me for the same reasons.

If this were to go in then for Python 3.3 the section of the porting HOWTO on what to do when you support Python 2.6 and later (http://docs.python.org/howto/pyporting.html#python-2-3-compatible-source) would change to:

* Use ``from __future__ import print_functions`` OR use ``print(x)`` but always with a single argument OR use six
* Use ``from __future__ import unicode_literals`` OR make sure to use the 'u' prefix for all Unicode strings (and then mention the concept of native strings) or use six
* Use the 'b' prefix for byte literals or use six

All understandable and with either a __future__ import solution or syntactic support solution for all issues, giving people the choice of either approach for what they prefer for each approach. I would also be willing to move the Python 2/3 compatible source section to the top and thus implicitly become the preferred way to port since people in the community have seemingly been gravitating towards that approach even without this help.

-Brett


A small quibble: I'd like to see a benchmark of a 'u' function implemented in C.

--Guido

On Sat, Feb 25, 2012 at 12:23 PM, Armin Ronacher
<armin.ronacher@active-4.com> wrote:
> Hi,
>
> I just uploaded PEP 414 which proposes am optional 'u' prefix for string
> literals for Python 3.
>
> You can read the PEP online: http://www.python.org/dev/peps/pep-0414/
>
> This is a followup to the discussion about this topic here on the
> mailinglist and on twitter/IRC over the last few weeks.
>
>
> Regards,
> Armin
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--
--Guido van Rossum (python.org/~guido)