[Python-Dev] PEP 549: Instance Properties (aka: module properties)

Guido van Rossum guido at python.org
Wed Sep 6 12:45:37 EDT 2017


On Wed, Sep 6, 2017 at 9:15 AM, Ivan Levkivskyi <levkivskyi at gmail.com>
wrote:

>
> On 6 September 2017 at 17:26, Guido van Rossum <guido at python.org> wrote:
>
>>
>> Is there a real use case for @property? Otherwise, if we're going to mess
>> with module's getattro, it makes more sense to add __getattr__, which would
>> have made Nathaniel's use case somewhat simpler. (Except for the __dir__
>> thing -- what else might we need?)
>>
>>
> One additional (IMO quite strong) argument in favor of module level
> __getattr__ is that this is already used by PEP 484 for stub files and is
> supported by mypy, see https://github.com/python/mypy/pull/3647
>

So we're looking for a competing PEP here. Shouldn't be long, just
summarize the discussion about use cases and generality here.

-- 
--Guido van Rossum (python.org/~guido)
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