B024: Missed error code

[decaz]

Error code is missed here:

flake8-bugbear/bugbear.py

Lines 1174 to 1179 in 1007f5c

	B024 = Error(
	message=(
	"{} is an abstract base class, but it has no abstract methods. Remember to use"
	" @abstractmethod, @abstractclassmethod and/or @abstractproperty decorators."
	)
	)

Should be "B024 {} is an abstract ...".

Refs #274
CC @jakkdl @Zac-HD

[cooperlees]

Thanks for reporting. I'll try get a fix out this week unless someone beats me. Bummer we missed this in review.

[Zac-HD]

🤔 we could add a check to the Error constructor that messages start with B\d\d\d:

[samueljsb]

I've suggested a fix for the missing error code in #276.

@Zac-HD I can look at adding a check to Error, or I can leave that for you if you prefer?

[DaniilAnichin]

Kinda-important, because without code one cannot ignore B024 in flake8 settings;
Also, what was the reasoning behind making it enabled by default?
Abstract class can have no abstract properties, it's not required or something

[jakkdl]

Ah sorry, in flake8-trio I define the error messages in the dict with the code as a key, and the key is pre-pended to the error message. Thanks for spotting it quickly :)

[cooperlees]

FWIW 22.8.23 is released + 22.8.22 is yanked.