[Python-ideas] Augmented assignment syntax for objects.

[Ryan Gonzalez]

*cough* I'll just drop this here a sec *cough*:

https://code.activestate.com/recipes/580790-auto-assign-self-attributes-in-__init__-using-pep-/

On Thu, Apr 27, 2017 at 10:24 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:
> On 25 April 2017 at 11:08, Erik <python at lucidity.plus.com> wrote:
>> Hi. I suspect that this may have been discussed to death at some point in
>> the past, but I've done some searching and I didn't come up with much.
>
> Hi Erik,
>
> Offering more concise ways of writing more powerful class definitions
> is certainly a common topic of exploration in Python development.
>
> A couple of folks have already mentioned Hynek Schlawack's `attrs`
> packages, which pairs up a class decorator with particular kinds of
> values set as class level attributes:
>
>     from attr import attrs, attrib
>
>     @attrs
>     class MyClass:
>         foo = attrib()
>         bar = attrib()
>         baz = attrib()
>         ...
>
> Here, the `attrs` decorator not only writes __init__ for you, but also
> __repr__, comparison operators, pickle support, and a range of other
> things. Glyph Lefkowitz put together a good post last year describing
> just how much functionality attrs implicitly adds to a typical class
> definition, all while making it shorter and less repetitive:
> https://glyph.twistedmatrix.com/2016/08/attrs.html
>
> So I think if Python were to make any changes to the default toolset
> in this area, it would be more along the lines of how `attrs` works
> (i.e. offering a more declarative approach to the high level task of
> defining structured data containers), than it would be along the lines
> of a low level syntactic solution that only benefited `__init__` and
> `__new__` without addressing any of the other repetitive aspects of
> writing comprehensive class definitions.
>
> For example, if we decided we wanted to go down that path, we could
> add a new `autoclass` module and write the equivalent of the above as:
>
>     from autoclass import make, field
>
>     @make
>     class MyClass:
>         foo = field()
>         bar = field()
>         baz = field()
>         ...
>
> That would provide us with a clear terminological distinction between
> autoclass fields and class attributes in general, while still letting
> people eliminate a lot of the boilerplate currently involved in
> writing classes that produce nice and easy to use instances.
>
> Cheers,
> Nick.
>
> --
> Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
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-- 
Ryan (ライアン)
Yoko Shimomura > ryo (supercell/EGOIST) > Hiroyuki Sawano >> everyone else
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