[IronPython] bytes and str in 2.7 io module

[Dino Viehland]

Jeff wrote:
> On Mon, Nov 8, 2010 at 10:55 AM, Dino Viehland <dinov at microsoft.com>
> wrote:
> > Ahh, yeah, we should probably have a helper method in here which will
> > convert the string back to bytes rather than all of these casts to
> > Bytes.  It could also be incompatible w/ CPython in that they *might*
> > allow bytearray objects to be returned too which these casts would also
> prevent.
> 
> I'll check what CPython allows (I presume you're still prohibited from looking
> at the source for it?). I have a patch that checks for strings as well, but I'm not
> happy with it yet.

I think the answer is yes, we are still prohibited from looking at the code, just
because we're generally not supposed to look at open source code at all.