It probably doesn't, this was just something I typed up on the fly, so is
unlikely the end result would be what you see above if it was actually
implemented.
The only way around that that I can think of now would be if there was two
functions, an impl_dictget that actually did the lookup that type could use
(and possibly getattr and the like) which would be called in the normal
dict get which would just return if the type did not define __getself__ and
would call it and return the result if it did.
This is not at all dissimilar to how dict setting works now
On Fri, Jun 21, 2019, 9:27 PM Chris Angelico <ros...@gmail.com> wrote:
> On Sat, Jun 22, 2019 at 11:19 AM nate lust <natel...@linux.com> wrote:
> > Typing this out though does make me think of an interesting idea. If
> there was something like __getself__ in addition to __setself__, you could
> implement things like MyInt. __getself__ would look something like:
> >
> > class MyInt:
> > def __init__(self, value):
> > self.value = value
> > def __getself__(self):
> > return self.value
> > def __setself__(self, value):
> > raise ValueError("Cant set MyInt")
> > x = MyInt(2)
> > print(x) -> 2
> > type(x) -> MyInt
> >
> > Now I have not really thought through how this would work, if it could
> work...
>
> How does print know to call getself, but type know not to?
>
> ChrisA
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