On Wed, Sep 29, 2010 at 9:31 AM, Brett Cannon <br...@python.org> wrote: > On Wed, Sep 29, 2010 at 05:42, Antoine Pitrou <solip...@pitrou.net> wrote: >> >> Le mercredi 29 septembre 2010 à 07:27 -0500, Benjamin Peterson a écrit : >>> > >>> > I would like to piggy-back on this discussion to suggest further >>> > warnings (either by default, or switchable). >>> > >>> > One feature I've often considered would be to add a warning in FileIO >>> > and socket dealloc if these objects haven't been closed explicitly. In >>> > most situations, relying on garbage collection to shutdown OS resources >>> > (here, file descriptors) is something we like to discourage. >>> > Furthermore, it can produce real bugs, especially under Windows when >>> > coupled with refererence cycles created by traceback objects (the >>> > random test_tarfile failures on the Windows buildbots were a symptom of >>> > that; their cause would have been obvious with such warnings). >>> > >>> > What do you think? >>> >>> It seems like a slippery slope. Sometimes you really don't care like >>> when you're just hacking together a quick script. >> >> Isn't the "with" statement appropriate in these cases? > > Yes, which is why I suspect people saying they don't bother have been > programming Python for a while and are not in the habit yet of using a > 'with' statement. The amount of extra typing compared to inlining a > call is minimal. > >> >> My assumption is/was that the benefit of warning against leaks in real >> applications (or even - sigh - the standard library) would outweigh the >> inconvenience when hacking together a quick script. > > Does everyone here run all their code under py-debug? If not then I > say switch it on when py-debug is on so that we at least detect the > leaks in the stdlib without having to think about it. > >> >> But if it doesn't, what about enabling it with a command-line switch? > > Sure, but I say always turn it on under py-debug.
This would be a big +1 from me. Geremy Condra _______________________________________________ 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
