On Wed, Jun 13, 2012 at 10:47 PM, R. David Murray <rdmurray at bitdance.com>wrote: > On Thu, 14 Jun 2012 11:48:08 +1000, Nick Coghlan <ncoghlan at gmail.com> > wrote: > > On Thu, Jun 14, 2012 at 6:06 AM, Terry Reedy <tjreedy at udel.edu> wrote: > > > On 6/13/2012 2:46 PM, Antoine Pitrou wrote: > > > > > >> Not only docstrings, but also asserts. I think running a pyo without > -O > > >> would be a bug. > > > > > > That cat is already out of the bag ;-) > > > People are doing that now by renaming x.pyo to x.pyc. > > > Brett claims that it is also easy to do in 3.3 with a custom importer. > > > > Right, but by resorting to either of those approaches, people are > > clearly doing something that isn't formally supported by the core. > > Yes, you can do it, and most of the time it will work out OK, but any > > weird glitches that result are officially *not our problem*. > > > > The main reason this matters is that the "__debug__" flag is > > *supposed* to be process global - if you check it in one place, the > > OK, the above are the two concrete reasons I have heard in this thread > for continuing the current behavior: > > 1) we do not wish to support running from .pyo files without -O > being on, even if it currently happens to work > > 2) the __debug__ setting is supposed to be process-global > > Both of these are good reasons. IMO the issue should be closed with a > documentation fix, which could optionally include either or both of the > above motivations. > Just for completeness, there is a third reason: 3) Would lead to an extra stat call per module when doing sourceless loads. While minor, it could add up if you ship only .pyo files but never run with -O. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20120614/7411e790/attachment.html>
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