Irit Katriel <iritkatr...@gmail.com> added the comment:
In urllib.request, there are in a few places things like:
except OSError as msg:
raise OSError('socket error', msg).with_traceback(sys.exc_info()[2])
I imagine this predates chaining - is there a reason not to raise..from here
instead of wrapping the "msg" exception (I'm guessing from the name that this
used to be a string, but now it's actually an exception).
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue46517>
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