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A proposal for java's "throws" in python: Extend type hints to cover exceptions (discuss.python.org)
submitted 2 years ago by to c/python@programming.dev
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This is a discussion on Python's forums about adding something akin to a throws keyword in python.

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[+] -8 points 2 years ago (2 children)

It was always quite clear which exceptions I had to catch (or not)

Lol. You're literally the only one that likes checked exceptions. And, it seems you think that it actually gives you information about what exceptions to catch. It does not. Most things just catch and rethrow as a RuntimException

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  • [–] 8 points 2 years ago

    Hey, I like checked exceptions too! I honestly think it's one of Javas's best features but it's hindered by the fact that try-catch is so verbose, libraries aren't always sensible about what exceptions they throw, and methods aren't exception-polymorphic for stuff like the Stream API. Which is to say, checked exceptions are a pain but that's the fault of the rest of the language around them and not the checked exceptions per se.

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  • [–] 7 points 2 years ago

    I also like checked exceptions. I like having a compile time check that I thought through error scenarios.

    Is it perfect? No, but it should be iterated upon, not discarded.

    FYI, catching and rethrowing as an unchecked exception is a pretty bad anti-patern (and a foul code smell).

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