Why Python 3?

[Chris Angelico]

On Mon, Apr 21, 2014 at 2:22 AM, Ian Kelly <ian.g.kelly at gmail.com> wrote:
> When I'm writing a generic average function, I probably don't know whether
> it will ever be used to average complex numbers.

This keeps coming up in these discussions. How often do you really
write a function that generic? And if you do, isn't it doing something
so simple that it's then the caller's responsibility (not the
function's, and not the language's) to ensure that it gets the right
result?

ChrisA