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

[Eric Snow]

On Mon, Apr 30, 2012 at 9:08 PM, Nick Coghlan <ncoghlan at gmail.com> wrote:
> On Tue, May 1, 2012 at 12:50 PM, Eric Snow <ericsnowcurrently at gmail.com> wrote:
>> In my mind sys.implementation makes more sense.  For example, in the
>> case of cache_tag (which is merely a potential future variable), its
>> value is an implementation detail used by importlib.  Having it in
>> sys.implementation would emphasize this point.
>
> Personally, I think cache_tag should be part of the initial proposal.
> Implementations may want to use different cache tags depending on
> additional information that importlib shouldn't need to care about,
> and I think it would also be reasonable to allow "cache_tag=None" to
> disable the implicit caching altogether.

I'm going to leave it as-is for the moment, but I'm leaning toward doing this.

-eric