[Python-3000] [Python-Dev] Byte literals (was Re: [Python-checkins] Changing string constants to byte arrays ( r55119 - in python/branches/py3k-struni/Lib: codecs.py test/test_codecs.py ))

Guido van Rossum guido at python.org
Tue May 8 17:25:27 CEST 2007

On 5/8/07, Jim Jewett <jimjjewett at gmail.com> wrote:
> I will be unhappy if 2to3 produces code that I can't run in (at least)
> 2.6, because then I would need to convert more than once.

This is the first time I hear of this requirement. It has not so far
been a design goal for the conversions in 2to3. The workflow that I
have in mind (and that others have agreed to be workable) is more like

1. develop working code under 2.6
2. make sure it is warning-free with the special -Wpy3k option
3. use 2to3 to convert it to 3.0 compatible syntax in a temporary directory
4. run your unit test suite with 3.0
5. for any defects you find, EDIT THE 2.6 SOURCE AND GO BACK TO STEP 2

--Guido van Rossum (home page: http://www.python.org/~guido/)

More information about the Python-3000 mailing list