[Python-Dev] PEP 3000 and iterators (original) (raw)

Lisandro Dalcin dalcinl at gmail.com
Sun Sep 11 00:07:35 CEST 2005

On 9/9/05, Guido van Rossum <guido at python.org> wrote:

For the builtins, it would actually be possible to do this by simply importing an alternate builtins module. Something like from futurebuiltins import min, max, zip, range

Yes. A straightforward solution...

For methods on standard objects like dicts it's not really possible either way; the type of a dict is determined by the module containing the code creating it, not the module containing the code using it.

I had that in mind when I wrote my post; changing types is not the way, that will not work. That is why I proposed future (I really do not know very well the implementation details of that feature) because I think the parser/compiler can (magically) make the replacements, e.g. dict.items -> dict.iteritems for Py2.X series in codes using dicts . Do you think something like this could be implemented in a safer way?

-- Lisandro Dalcín

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