Malcolm Tredinnick wrote:
> On Thu, 2008-10-02 at 10:32 -0400, Marty Alchin wrote:
>
>> Looking over the new things in Python 2.6, I wonder if there are plans
>> to inherit from any of the new abstract base classes in Django. It
>> looks (to me) like it could be backwards-compatible, using an import
>> like so:
>>
>> try:
>> from collections import Sequence
>> except ImportError:
>> # Fallback for Python 2.5
>> Sequence = type('Sequence', (object,), {})
>>
>> Django obviously works just fine without these at the moment, so
>> there's no pressing need to do so, but if they catch on and 2.6+
>> libraries start checking for them, it might be beneficial if some of
>> our custom types, like QuerySets, inherited the appropriate classes.
>>
>
> How about we wait until that looks like maybe happening, then? Python
> 2.6 is approximately 43 seconds old and there isn't a lot of real-world
> experience with the traps and benefits of using this approach yet.
> Hopefully people writing 2.6 code won't be deliberately making it
> difficult for code that is portable across more than the "latest
> hotness" version to function and we can avoid having to add four lines
> of relatively confusing line-noise to our import statements.
>
> Python code should be readable. The above code fragment fails that test
> and whilst we have some similar code for other backwards compatibility
> reasons, the existing cases are requirements. This one is optional, so
> I'd much rather avoid it for now.
>
+1
Trendy might be superficially appealing, but I personally felt 2.6 would
have been just as useful without the ABC backport.
regards
Steve
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