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Fri Dec 3 17:28:14 CET 2010 · https://mail.python.org/pipermail/python-dev/2010-December/106363.html

On Fri, 03 Dec 2010 10:11:29 -0500
"R. David Murray" <rdmurray at bitdance.com> wrote:
> > 
> > >>> 'abc'.transform('hex')
> > TypeError: 'str' does not support the buffer interface
> > >>> b'abc'.transform('rot13')
> > TypeError: expected an object with the buffer interface
> 
> I find these 'buffer interface' error messages to be the most confusing
> error message I get out of Python3 no matter what context they show up
> in.  I have no idea what they are telling me.  That issue is more
> general than transform/untransform, but perhaps it could be fixed
> for transform/untransform in particular.

I agree. "buffer interface" is a technicality that the Python user
doesn't do about (unless (s)he also writes C extensions). How about
"expected a bytes-compatible object"?

Regards

Antoine.

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[Python-Dev] "buffer interface" messages