Author of this PEP: Guido van Rossum
This appendix is the original PEP for Python 3 and even though the initial abstract below is a bit dated as of October 2014, Python 3.4.1 is the latest stable release. However, globally, many still use Python 2.x, and you may be called on to have a project with runs on both. To that end, this appendix offers valuable insight to that process and gives important background information for you to consider during the developement process.
This PEP sets guidelines for Python 3000 development. Ideally, we first agree on the process, and start discussing features only after the process ...