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devel / comp.lang.python / Re: type annotation vs working code

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Re: type annotation vs working code

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Subject: Re: type annotation vs working code
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 by: dn - Wed, 4 Oct 2023 08:05 UTC

On 04/10/2023 19.41, Chris Angelico via Python-list wrote:
> On Wed, 4 Oct 2023 at 15:27, dn via Python-list <python-list@python.org> wrote:
>> - should the class have been called either;
>>
>> class SomethingSingleton():
>>
>> or a Singleton() class defined, which is then sub-classed, ie
>>
>> class Something( Singleton ):
>>
>> in order to better communicate the coder's intent to the reader?
>
> TBH, I don't think it's right to have a Singleton class which is
> subclassed by a bunch of different singletons. They aren't really
> subclasses of the same class. I could imagine Singleton being a
> metaclass, perhaps, but otherwise, they're not really similar to each
> other.

I'm with you on this - should have made Singleton() an ABC.

Yes, would only be a skeleton around which concrete singleton classes
could be built.

Like you, I v.rarely use them - but which means that the ABC is useful
because it would save me from having to remember the curly-bits
all-over-again...

--
Regards,
=dn

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