On Sun, Apr 5, 2015 at 12:00 AM, Steven D'Aprano <steve@pearwood.info> wrote:
But frankly, I would be satisfied with the list and meaning of format
codes being documented somewhere where I can inspect it at runtime using
help(), without having to run `man strftime` on a Linux system or search
the Internet.

That's easy.  We added format codes to help('time.strftime') a couple years ago [1].  We can easily add the same to datetime.strftime.  Feel free to open an issue.  We don't need a PEP for that. :-)

[1] http://bugs.python.org/issue9650