[Python-Dev] Restricted API versioning

["Martin v. Löwis"]

> This strikes me as in opposition to the Python-level policy of duck
> typing. Would it be more appropriate to, instead of asking if it's
> Python 3.3.0, ask if it's a Python that supports PY_FEATURE_FOOBAR? Or
> would that result in an unnecessary proliferation of flag macros?

It would, hence I'm -1. I believe it is the motivation for the gcc
assertion preprocessor feature, which never caught on.

Regards,
Martin