On Wed, 2012-09-26 at 22:06 +1000, Amit Saha wrote: > On Wed, Sep 26, 2012 at 1:04 AM, Will Woods <wwoods@xxxxxxxxxx> wrote: > > Hey all - here is a quick note about the various ways to exit python > > programs. Consider this a suggestion for a future CodingStyle / New > > Developer FAQ, or something. > > > > > > sys.exit(returncode) really just does: > > raise SystemExit(returncode) > > So we can use that rather than importing sys just for sys.exit(). > > > > Note that SystemExit is a subclass of Exception, so if you're handling > > Exception anywhere, you're going to catch SystemExit/sys.exit(). > > (This is another reason 'except Exception: ..." is a bad idea.) > > Thanks for the tip. Perhaps you should add that SystemExit is a > subclass of BaseException and not Exception starting Python 2.5 [1]. Right. This is why we went from a bare 'except' to 'except Exception' in much of anaconda a couple of years ago -- to not catch SystemExit. > > [1] http://docs.python.org/library/exceptions.html#exceptions.SystemExit > > (Thanks to Nick Coghlan for pointing this to me when i shared your tip > on twitter). > > Cheers, > Amit. > _______________________________________________ Anaconda-devel-list mailing list Anaconda-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/anaconda-devel-list
