On 24Jun2017 20:31, Steve D'Aprano <steve+pyt...@pearwood.info> wrote:
What's the right/best way to test whether an object is an exception ahead of
time? (That is, without trying to raise from it.)
I have:
return (isinstance(obj, type) and issubclass(obj, BaseException)
or isinstance(obj, BaseException))
I haven't a better idea.
Are you supporting Python 2 here, where one can raise bare exceptions instead
of instances? Also, do you need the "isinstance(obj, type)" precursor to the
issubclass?
Might you be better with:
return ( issubclass(obj, BaseException)
if isinstance(obj, type)
else isinstance(obj, BaseException)
)
?
Curious: why do you need to test this? Some function which may return a "value"
or an exception?
Cheers,
Cameron Simpson <c...@zip.com.au>
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