Hello, On Mon, 7 Jan 2019 01:14:55 +1100 Steven D'Aprano <st...@pearwood.info> wrote:
[] > > Thanks, that summarizes it well. And well, my interest is also how > > non-compliant would be for another Python implementation to act > > differently, specifically to skip wrapping an except handler body in > > try-finally (i.e., go back to Python2 behavior). I'm keen to add > > such an option to my fork of MicroPython. > > Wouldn't that mean that MicroPython suffers from the > exception/traceback reference cycle problem? How do you propose to > solve that? To answer this, MicroPython doesn't have reference counting and relies solely on garbage collection, so breaking cycles early wouldn't have much effect. Breaking stray links to should-be-dead data structures might (to allow them to be collected sooner rather than later), but probably not at the expense of introducing extra entry in the block stack. (That may seems like breadcrumb saving, but saving a few percents of overhead in many places is how MicroPython achieves its promise of programming small embedded systems in a very high level language.) [] -- Best regards, Paul mailto:pmis...@gmail.com _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com