[issue6829] Frendly error message when inheriting from function

Changes by Yongzhi Pan : -- nosy: +fossilet ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.o

[issue6829] Frendly error message when inheriting from function

Georg Brandl added the comment: In Python 3, due to the new class creation the somewhat confusing message augmentation has been removed altogether, and for me there seems to be no way to add a better message about base class types somewhere without making too many assumptions. -- sta

[issue6829] Frendly error message when inheriting from function

Changes by Gabriel Genellina : -- nosy: +gagenellina ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail

[issue6829] Frendly error message when inheriting from function

R. David Murray added the comment: It is possible that a TypeError could arise during the execution of the metaclass bases that is not the result of inheriting from something other than a class/type. It might, however, be possible to enhnace the message with the name of the metaclass or first b

[issue6829] Frendly error message when inheriting from function

anatoly techtonik added the comment: Or with more info if possible: Error when inheriting class "%s" - parent is not a class. -- ___ Python tracker ___ _

[issue6829] Frendly error message when inheriting from function

anatoly techtonik added the comment: Or just: Error inheriting from object that is not a class -- ___ Python tracker ___ ___ Python-b

[issue6829] Frendly error message when inheriting from function

anatoly techtonik added the comment: How about: Error running metaclass bases (attempt to inherit from object that is not a class) -- ___ Python tracker ___

[issue6829] Frendly error message when inheriting from function

R. David Murray added the comment: That would still be special-casing, you'd just be special casing three things instead of one, nor does that exhaust the list of things for which you might get this kind of error. However, the code that generates the error message contains the following comment

[issue6829] Frendly error message when inheriting from function

Changes by anatoly techtonik : -- status: closed -> pending ___ Python tracker ___ ___ Python-bugs-list mailing list Unsubscribe: http

[issue6829] Frendly error message when inheriting from function

anatoly techtonik added the comment: Ok, but why not to change the message to less cryptic "Impossible to inherit class from function(), string or int"? -- ___ Python tracker __

[issue6829] Frendly error message when inheriting from function

Georg Brandl added the comment: You'll get a similar message when trying to inherit from e.g. a string or an int. I see no compelling reason to special-case functions here. -- nosy: +georg.brandl resolution: -> wont fix status: open -> closed ___ P

[issue6829] Frendly error message when inheriting from function

New submission from anatoly techtonik : It is an error to try to inherit from function and the error message in this case is: {{{ Traceback (most recent call last): File "", line 1, in File "m:\p\pb.py", line 4, in class PostgreSQLConnection(DatabaseConnection): TypeError: Error when c