[Python-ideas] Decorator to avoid a mistake

[François Leblanc]

I can imagine using a metaclass specialized witch can be activate or
desactivate but the cost of decorator
call still be here...

I think its will be a good improvement if we can provide a solution for
this, and i ask myself if this can be set

in interpreter with a flag to activate for exemple and with no performance
cost without the flag set, so you

will have the choice and a good way to check youre code.

To have no performance cost perhaps the best way it's to use docstring and
pylint...



2016-11-23 10:10 GMT+01:00 Paul Moore <p.f.moore at gmail.com>:

> On 23 November 2016 at 08:08, François Leblanc <fleblanc50 at gmail.com>
> wrote:
> > It's why I'd prefer this integrate in language, but if there no way to
> get
> > it without performance cost
> > I will have a look to a pylint solution...
>
> The point here is that if there is a way to get it without a
> performance cost (I can't imagine there would be, it's got to add a
> check for whether you're overriding a method at a minimum, but you may
> be able to come up with something) then you can do that within the
> language as it stands. It may need a specialised metaclass, but that's
> not a problem. At least, if it *is* an issue to you, you can argue for
> having it be the behaviour of the default metaclass once you've
> demonstrated that it works and doesn't hurt performance. And if there
> is a performance hit, then having the behaviour as opt-in based on a
> custom metaclass means that people can choose if they want to pay that
> cost.
>
> Paul
>
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