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Tue Jan 14 22:44:16 CET 2014 · http://mail.python.org/pipermail/python-dev/2014-January/131562.html

On January 14, 2014 at 4:36:00 PM, Ethan Furman (ethan at stoneleaf.us) wrote:
> 
> On 01/14/2014 12:57 PM, Antoine Pitrou wrote:
> > On Tue, 14 Jan 2014 11:56:25 -0800
> > Ethan Furman wrote:
> >>
> >> %s, because it is the most general, has the most convoluted 
> resolution:
> >>
> >> - input type is bytes?
> >> pass it straight through
> >
> > It should try to get a Py_buffer instead.
> 
> Meaning any bytes or bytes-subtype will support the Py_buffer 
> protocol, and this should be the first thing we try?
> 
> Sounds good.
> 
> For that matter, should the first test be "does this object support 
> Py_buffer" and not worry about it being
> isinstance(obj, bytes)?
> 
> 
> >> - input type is numeric?
> >> use its __xxx__ [1] [2] method and ascii-encode it (strictly) 
> >
> > What is the definition of "numeric"?
> 
> That is a key question.

isinstance(o, numbers.Number) ?

Yury

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Showing content from http://mail.python.org/pipermail/python-dev/2014-January/131562.html below:

[Python-Dev] PEP 461 - Adding % and {} formatting to bytes