[Python-ideas] Dunder method to make object str-like

[INADA Naoki]

>
>
> We have abstract base classes for such tests, but there's nothing
> which would define "string-like" as ABC. Before trying to define
> a test via a special method, I think it's better to define what
> exactly you mean by "string-like".
>
> Something along the lines of numbers.Number, but for strings.
>
> To make an object string-like, you then test for the ABC and
> then call .__str__() to get the string representation as string.
>
>
Does ABC is easy to use from C?
There should be easy way to (1) define "string-like" class in C and (2) use
"string-like" object from C.
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