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Update from Ethan Furman.

This commit is contained in:
Brett Cannon 2012-02-28 10:02:09 -05:00
parent a71aa54d64
commit e28aba7b6b
1 changed files with 8 additions and 3 deletions
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11
pep-0409.txt
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@ -153,12 +153,17 @@ The default exception printing routine will then:
In both of the latter cases the exception chain will stop being followed. In both of the latter cases the exception chain will stop being followed.
Because the default value for ``__cause__`` is now ``Ellipsis``:: Because the default value for ``__cause__`` is now ``Ellipsis`` and ``raise
Exception from Cause`` is simply syntactic sugar for::
_exc = NewException()
_exc.__cause__ = Cause()
raise _exc
``Ellipsis``, as well as ``None``, is now allowed as a cause::
raise Exception from Ellipsis raise Exception from Ellipsis
is allowed and will (re)set ``__cause__`` to ``Ellipsis``.
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