On 6 June 2014 19:31, Victor Stinner victor.stinner@gmail.com wrote:
Guido just wrote in the issue: "Actually for asyncio we have special dispensation to push new features to minor releases (until 3.5). Please push to 3.4 so the source code is the same everywhere (except selectors.py, which is not covered by the exception)."
I disagree with Guido. I would prefer to start to maintain a different branch for Python 3.4, because I consider that only bugfixes should be applied to Python 3.4.
This is why PEP 411 was thrashed out: to let us split the dates of "make broadly available in the standard library" and "get ultra conservative with API changes". asyncio was added as a provisional module, so it can still get new features in 3.4.x maintenance releases - that's a far more minor change than the backwards compatibility breaks permitted by the PEP.
The difference with selectors is that it was *not* added as a provisional module - it's subject to all the normal stability requirements.
Cheers, Nick.