[Python-3000] exclusion feature for 2to3? (original) (raw)

Guido van Rossum guido at python.org
Mon Jul 16 04:22:15 CEST 2007

On 7/15/07, Georg Brandl <g.brandl at gmx.net> wrote:

In order to have a codebase run in 2.x and 3.x, via automated translated by 2to3, there should be some "exclusion feature" for single lines that tells the refactorer not to touch those lines.

For example, if you have some object that still has an iteritems() method and keeps it, it'll have to stay the same during translation. Same goes, e.g., for methods named next(), haskey() etc. Most obvious would be a special comment, something like for x in curiousobject.iteritems(): # 2to3:keep foo(x) Does that make sense?

Absolutely. (Were you in the audience of my keynote at EuroPython? I believe I briefly mentioned the need for such a feature there. :-)

Can't say I have a good feeling for how to implement it yet, but it should definitely be possible. Precise syntax to be done.

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

More information about the Python-3000 mailing list