Message 170603 - Python tracker

I believe the conversion is happening in Objects/abstract.c in PyObject_Format, around line 864, near this comment:

    /* Convert to unicode, if needed.  Required if spec is unicode
       and result is str */

I think changing the docs will result in more confusion than clarity, but if you can come up with some good wording, I'd be okay with it. I think changing the code will likely break things with little or no benefit.