> While I’m fine with the API you propose, you could consider keyword-only arguments to help future proof the call signature. I don’t like it as much because it’s not as backward compatibility proof, but it’s an option to perhaps consider.
Let's say that we have: hook(*, exc_type, exc_value, exc_tb, obj). Now we pass a new err_msg keyword argument: the call fails with a TypeError :-( Or do you mean using **kwargs? I don't think **kwargs is a good API :-( Well, the same can be done using *args and positional arguments to ignore new unknown arguments, but I also dislike such API. Victor -- Night gathers, and now my watch begins. It shall not end until my death.
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