You might want to check out attrs (http://attrs.readthedocs.io/en/stable/).
It can generate the __init__ for you, and much much more.
Date: Tue, 25 Apr 2017 14:33:49 +0200
> From: George Fischhof <geo...@fischhof.hu>
> To: Paul Moore <p.f.mo...@gmail.com>
> Cc: Python-Ideas <python-ideas@python.org>, "Steven D'Aprano"
> <st...@pearwood.info>
> Subject: Re: [Python-ideas] Augmented assignment syntax for objects.
> Message-ID:
> <
> cafwcp0gjg1bxeq2pmv637bxg6+vcxivu1qnekdetuhjmot_...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> 2017. ?pr. 25. de. 10:04 ezt ?rta ("Paul Moore" <p.f.mo...@gmail.com>):
>
> On 25 April 2017 at 03:53, Steven D'Aprano <st...@pearwood.info> wrote:
> > On Tue, Apr 25, 2017 at 02:08:05AM +0100, Erik wrote:
> >
> >> I often find myself writing __init__ methods of the form:
> >>
> >> def __init__(self, foo, bar, baz, spam, ham):
> >> self.foo = foo
> >> self.bar = bar
> >> self.baz = baz
> >> self.spam = spam
> >> self.ham = ham
> >>
> >> This seems a little wordy and uses a lot of vertical space on the
> >> screen.
> >
> > It does, and while both are annoying, in the grand scheme of things
> > they're a very minor annoyance. After all, this is typically only an
> > issue once per class, and not even every class, and vertical space is
> > quite cheap. In general, the barrier for accepting new syntax is quite
> > high, and "minor annoyance" generally doesn't reach it.
>
> I suspect that with a suitably creative use of inspect.signature() you
> could write a decorator for this:
>
> @auto_attrs
> def __init__(self, a, b, c):
> # Remaining init code, called with self.a, self.b and self.c set
>
> I don't have time to experiment right now, but will try to find time
> later. If nothing else, such a decorator would be a good prototype for
> the proposed functionality, and may well be sufficient for the likely
> use cases without needing a syntax change.
>
> Paul
>
>
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