On 2008-03-21 22:32, Martin v. Löwis wrote: >> It's not implementable because the work has to occur in ast.c (see >> Py_UnicodeFlag). It can't occur later, because you need to skip the >> encoding being done in parsestr(). But the __future__ import can only >> be interpreted after the AST is built, at which time the encoding has >> already been applied. > > I think it would be possible to check for future statements on the > basis of nodes already. Take a look at how Python 2.3 implemented > future statements (why was that rewritten to use the AST, anyway?). > >> As for it not making sense, this is really in the realm of 2to3. I'm >> beginning to really believe this statement in PEP 3000: > > There is still the original use case of people who don't want to run > 2to3 (for whatever reasons - mostly probably subjective ones), and > who would rather run a single code base unmodified. They don't care > that documentation tells them this is impossible, when they feel they > are so close to making it possible.
Could we point them to a special byte-code compiler such as Andrew Dalke's python4ply: http://dalkescientific.com/Python/python4ply.html That approach appears to be a lot easier to implement than trying to tweak the C implementation of the Python parser. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Mar 21 2008) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ :::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,MacOSX for free ! :::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 _______________________________________________ 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
