On Wed, Feb 20, 2019 at 11:52 PM Ben Rudiak-Gould <benrud...@gmail.com> wrote:
> Other functions also conceptually have three ways of returning: > ordinary return with a value, a documented special return like > KeyError, and pass-through exceptions. well, I wouldn't call that three ways of returning... But yes, there is no (easy) way to distinguish an Exception raised by the function you called, and one raised somewhere deeper that. And I have been bitten by that more than once. It makes "Easier to ask forgiveness than permission" kind of tricky. But I've found that good unit tests help a lot. And Exception handling is messy -- the point made by the OP, I'm not sure there's a better way to do it. -CHB -- Christopher Barker, PhD Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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