Martin Panter added the comment: This would be hard to get right, but maybe not impossible. If the frame is suspended, and will do special handling of GeneratorExit, a ResourceWarning would be nice in most cases. But if the frame will not catch any exception, there should be no ResourceWarning. I think this is the big difference between mygen() and Victor’s generator expression:
gen = (2**i for i in itertools.count()) next(gen) # Generator suspended but won’t catch any exception del gen # Like deleting a plain iterator; no ResourceWarning expected One more complication: If the frame is suspended at something like “yield from open(fname)”, it should trigger a ResourceWarning, because GeneratorExit would cause the file’s close() method to be called. But if “yield from” is calling a simpler generator-iterator with nothing to clean up, it should not emit a ResourceWarning. ---------- nosy: +martin.panter _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28629> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
