Message 414208 - Python tracker

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Author	gvanrossum
Recipients	Yoshanuikabundi, docs@python, gvanrossum, rhettinger
Date	2022-02-28.16:58:45
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1646067525.8.0.39645670829.issue46814@roundup.psfhosted.org>
In-reply-to

Content
Raymond, I agree that this is going too far. I believe the OP has taken the position that "abstract" has only one meaning and it is defined by inspect.isabstract(). I disagree with this. An ABC is an ABC is an ABC, and it provides certain functionality through the ABCMeta metaclass: (1) forbid instantiation when at least one @abstractmethod-decorated method exist that isn't overridden, and (2) virtual subclasses. Calling out that a class with metaclass=ABCMeta is only abstract when it has at least one @abstractmethod left, over and over, is not helpful.

Raymond, I agree that this is going too far. I believe the OP has taken the position that "abstract" has only one meaning and it is defined by inspect.isabstract(). I disagree with this.

An ABC is an ABC is an ABC, and it provides certain functionality through the ABCMeta metaclass: (1) forbid instantiation when at least one @abstractmethod-decorated method exist that isn't overridden, and (2) virtual subclasses.

Calling out that a class with metaclass=ABCMeta is only abstract when it has at least one @abstractmethod left, over and over, is not helpful.

History
Date	User	Action	Args
2022-02-28 16:58:45	gvanrossum	set	recipients: + gvanrossum, rhettinger, docs@python, Yoshanuikabundi
2022-02-28 16:58:45	gvanrossum	set	messageid: <1646067525.8.0.39645670829.issue46814@roundup.psfhosted.org>
2022-02-28 16:58:45	gvanrossum	link	issue46814 messages
2022-02-28 16:58:45	gvanrossum	create