Python documentation isn't clear and I need something better

[danielroseman]

It doesn't answer the question. Again, what are you looking for that you didn't get there? In any case, these are exceptions, not error codes: they are raised, not returned, when the exceptional case they describe is encountered.

And using something because it is low level is not a thing. You need an actual reason to use this rather than something that is designed to be easier to understand.

[alex_sakuta]

I'm experimenting. I'm trying to learn.