Yury Selivanov wrote:
> Re "raise ValueError from ..."
>
> So what does it mean now? Just resetting __cause__ to make __context__ printed?
Whatever __cause__ was before (None, or an actual exception), it is now
Ellipsis -- so __context__ will be printed and the exception chain will
be followed.
> Can you show the down-to-earth snippet of code where such syntax would be useful?
Not sure I'll ever use it this way, but:
try:
try:
raise IndexError()
except:
raise CustomError() from None
except CustomError as e:
# nevermind, let's see the whole thing after all
raise e from Ellipsis
~Ethan~
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