[Python-Dev] Request for clarification of PEP 380 (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Thu Mar 8 15:15:20 CET 2012


On Fri, Mar 9, 2012 at 12:06 AM, Mark Shannon <mark at hotpy.org> wrote:

The text of the PEP seems to implicitly assume that all sub-iterators will be generators, so it is not clear on the above points.

On the contrary, this question is explicitly addressed in the PEP: http://www.python.org/dev/peps/pep-0380/#finalization

If you want to block an inadvertent close() call, you need to either wrap the object so it doesn't implement unwanted parts of the generator API (which is the iterator protocol plus send(), throw() and close()), or else you should continue to use simple iteration rather than delegation.

Cheers, Nick.

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia



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