On Mon, Feb 2, 2009 at 11:38 AM, Nick Coghlan <ncogh...@gmail.com> wrote: > That's what the -3 command line switch is for - it sets a boolean flag > that C code can check to see if it should emit warnings for things that > are going to break in Python 3.x.
Understood. My worry was that we'd get a lot of false positives--- i.e., warnings about pieces of Python 2.7 that don't need to change. But I guess that's okay. > There's already at least one example > of its use in typeobject.c (relating to inheritance of the tp_hash > slot). There are a few other examples about the place (e.g. I believe > that when -3 is defined the return value of dict.keys and friends is > changed to a list subclass that warns on certain operations that have > different semantics in 3.x). Thanks for the pointers. I'll take a look and see if I can come up with a patch. But I'd like to complete the rest of the cmp removal stuff first. Mark _______________________________________________ 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
