Extend type hints to cover exceptions
discuss.python.org
PEP 484 introduced type hints, at this time documenting exceptions was left to docstrings. I seek to suggest a reason this feature might be desirable along with how it might be used. Error handling in python does an excellent job of keeping the error-path out of the way when writing the normal flow of logic, however for larger code bases it is not always clear what exceptions may be caused by calling existing code. Since these cases are easily missed they may reach a higher level than intended ...

This is a discussion on Python’s forums about adding something akin to a throws keyword in python.

  • onlinepersona@programming.devOPEnglish
    0·
    1 year ago

    When I used to write Java and switched to Python, this was one of the things I missed. It was always quite clear which exceptions I had to catch (or not). Just today, I ran into the issue of trying to cover the exceptions a library could throw without using except: or except Exception as e, but finally gave up and gave in to it. The linter wasn’t happy, but fuck it.

    • Fal@yiffit.netEnglish
      01·
      1 year ago

      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