On Thu, Jul 24, 2008 at 9:39 PM, Robert Brewer <[EMAIL PROTECTED]> wrote: > Raymond Hettinger wrote: >> The intended upgrade path is through 2.6. >> If you go straight from 2.5, you don't get >> to go through a step with the -3 warnings >> and optional text/bytes annotations. >> >> IMO, it would be a mistake to create a 2.5 to 3.0 converter. >> >> ----- Original Message ----- >> From: "Robert Brewer" <[EMAIL PROTECTED]> >> To: "Python 3000" <python-3000@python.org> >> Sent: Thursday, July 24, 2008 9:24 PM >> Subject: [Python-3000] lib2to3 refactor.py has a lot of 2.6-isms >> >> >> > The README at >> > >> > http://svn.python.org/view/sandbox/trunk/2to3/README?rev=65003&view=aut >> o >> > says: "2to3 must be run (at the moment) with Python 2.x!" However, > it >> > doesn't even import under 2.5.2 because of print() statements, >> > 'Exception as err', .relative imports, etc. >> > >> > Is this an attempt to make people upgrade to 2.6 before converting > to >> 3? >> > Or is the desire to eventually run under 3.0? If neither, would > y'all >> > welcome a version that ran under 2.5? I'd be happy to try my hand at >> > that. > > That's fine by me. But every combination of refactor.py with 2.6 and 3.0 > is also failing. Which combination is the preferred one so I can try to > fix it? > > C:\Python25\Lib\site-packages>c:\python30\python > c:\python30\Lib\lib2to3\refactor.py --help > Traceback (most recent call last): > File "c:\python30\Lib\lib2to3\refactor.py", line 25, in <module> > from .pgen2 import driver > ValueError: Attempted relative import in non-package > > C:\Python25\Lib\site-packages>c:\python26\python > c:\python30\Lib\lib2to3\refactor.py --help > File "c:\python30\Lib\lib2to3\refactor.py", line 67 > print("At least one file or directory argument required.", > file=sys.stderr) > ^ > SyntaxError: invalid syntax > > C:\Python25\Lib\site-packages>c:\python26\python > c:\python26\Lib\lib2to3\refactor.py --help > Traceback (most recent call last): > File "c:\python26\Lib\lib2to3\refactor.py", line 25, in <module> > from .pgen2 import driver > ValueError: Attempted relative import in non-package > > C:\Python25\Lib\site-packages>c:\python30\python > c:\python26\Lib\lib2to3\refactor.py --help > File "c:\python26\Lib\lib2to3\refactor.py", line 61 > print "Available transformations for the -f/--fix option:" > ^ > SyntaxError: invalid syntax
Ah, this is a docs problem: the entry point is ./2to3, not lib2to3/refactor.py. I've just committed r65224 to fix the README. $ py26 2to3 --helpUsage: refactor.py [options] file|dir ... Options: -h, --help show this help message and exit -d, --doctests_only Fix up doctests only -f FIX, --fix=FIX Each FIX specifies a transformation; default all -l, --list-fixes List available transformations (fixes/fix_*.py) -p, --print-function Modify the grammar so that print() is a function -v, --verbose More verbose logging -w, --write Write back modified files $ In the olden days, 2to3 used to run on 2.4, 2.5 and 2.6, but at some point (PyCon 2008, I believe) the decision was taken to intentionally drop support for 2.4 and 2.5. Collin _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
