On Tue, Jun 21, 2011 at 9:27 AM, Tarek Ziadé <ziade.ta...@gmail.com> wrote:
> On Tue, Jun 21, 2011 at 3:12 PM, R. David Murray <rdmur...@bitdance.com> > wrote: > > On Tue, 21 Jun 2011 13:42:05 +0200, =?ISO-8859-1?Q?Tarek_Ziad=E9?= < > ziade.ta...@gmail.com> wrote: > >> Before I start to write my own refactoring tool, I was wondering if > >> anyone here had some experience in this, and could give me some hints. > > > > Coul you could just write a 3to2 fixer? I don't know how hard it is to > > run just a selected set of fixers (so that you could use it to generate > > python3 code), but it seems to me that renaming modules is something > > that 3to2 (and 2to3, of course) should be good at. > > The one thing rope is good at is to find where a given variable name > is used, and rename all occurrences recursively. So basically, when > you rename an import, it renames all the code that uses it. > > I don't really know how 2to3/3to2 work but I assumed that it does not > do this, but simply give you a hook for every visited node. IOW that > looking for dependencies is to be done > > Cheers > Tarek > > > > > -- > > R. David Murray http://www.bitdance.com > > > > > > -- > Tarek Ziadé | http://ziade.org > Yes, 2to3/3to2 does not do anything fancy like that. The tools are purely concerned with syntax, whereas renaming imports is semantic. The good news is that this line: import packaging as _myPackaging can be replaced by: import distutils2 as _myPackaging and code that uses _myPackaging will work. I've attached a fixer that can go into your lib3to2/fixes folder. You should also edit fix_imports.py and add the line: "packaging" : "distutils2", to the MAPPING dictionary near the top, then you can run 3to2 like this: 3to2 -fpackaging -fimports files_to_fix.py (-w option to write changes to the files modified) Hope this helps, --Joe Amenta
fix_packaging.py
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