2012/2/27 Ethan Furman <et...@stoneleaf.us>: > Benjamin Peterson wrote: >> >> 2012/2/26 Nick Coghlan <ncogh...@gmail.com>: >>> >>> Thanks for writing that up. I'd be amenable if the PEP was clearly >>> updated to say that ``raise exc from cause`` would change from being >>> syntactic sugar for ``_hidden = exc; _hidden.__cause__ = cause; raise >>> exc`` (as it is now) to ``_hidden = exc; _hidden.__cause__ = cause; >>> _hidden.__suppress_context__ = True; raise exc``. The patch should >>> then be implemented accordingly (including appropriate updates to the >>> language reference). >> >> >> I add the following lines to the PEP: >> >> To summarize, ``raise exc from cause`` will be equivalent to:: >> >> exc.__cause__ = cause >> exc.__suppress_context__ = cause is None >> raise exc > > > So exc.__cause__ will be None both before and after `raise Exception from > None`?
Yes. -- Regards, Benjamin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
