Martin Panter added the comment:
Regarding the second bug, did you consider that the exception thrown to the
generator can already have __context__ set?
try:
try: raise ValueError("Context outside of generator")
except ValueError as ex: raise SubError() from ex
except SubError as ex:
coro.throw(ex) # ex.__context__ is a ValueError
I guess either one context could trump the other, or we could to follow the
chain of contexts and append the other chain at the end. Both these ideas seem
a bit ugly though.
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nosy: +martin.panter
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<http://bugs.python.org/issue25612>
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