[Python-ideas] PEP 4XX: Adding sys.implementation

[Chris Rebert]

On Wed, May 2, 2012 at 8:49 PM, Steven D'Aprano <steve at pearwood.info> wrote:
> On Wed, May 02, 2012 at 08:17:40PM -0600, Eric Snow wrote:
>> On Mon, Apr 30, 2012 at 3:04 PM, Barry Warsaw <barry at python.org> wrote:
>> > On Apr 27, 2012, at 12:36 AM, Eric Snow wrote:
<snip>
> I am still unclear what justification there is for having a separate
> sys.version (from PEP 421: "the version of the Python language") and
> sys.implementation.version ("the version of the Python implementation").
> Under what circumstances will one change but not the other?

In the event of an implementation bugfix? The Python version
implemented would be unchanged, but the implementation version would
be incremented slightly.

Cheers,
Chris