Re: [Python-Dev] Is static typing still optional?

2017年12月17日 08:26:44 -0800

On Sun, Dec 17, 2017 at 2:11 AM, Julien Salort <[email protected]> wrote:
> Le 15/12/2017 à 22:14, Paul Moore a écrit :
>
> Annotations and the annotation syntax are fundamental to the design.
>> But that's core Python syntax. But I wouldn't describe types as being
>> that significant to the design, it's more "if you supply them we'll
>> make use of them".
>>
> Naive question from a lurker: does it mean that it works also if one
> annotates with something that is not a type, e.g. a comment,
>
> @dataclass
> class C:
> a: "This represents the amplitude" = 0.0
> b: "This is an offset" = 0.0
I would personally not use the notation for this, but it is legal code.
However static type checkers like mypy won't be happy with this.
-- 
--Guido van Rossum (python.org/~guido)
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