Nick Coghlan <ncoghlan@gmail.com> wrote:
It could be very interesting to add an "ascii-warn" codec to Python 2.7, and then set that as the default encoding when the -3 flag is set.
I don't think that can work. The library code in Python would spew out warnings even in the cases when nothing is wrong with the application code. I think warnings have to be added to a Python where str and bytes have been properly separated. Without extreme backporting efforts, that means 3.x. We don't want to saddle 3.x with a bunch of backwards compatibility cruft. Maybe some of my runtime warning changes could be merged using a command line flag to enable them. It would be nice to have the stepping stone version just be normal 3.x with a command line option. However, for the sanity of people maintaining 3.x, I think perhaps we don't want to do it.