[issue46517] Review exception handling in urllib.parse

[Irit Katriel]

Irit Katriel <iritkatriel at 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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