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Mon Aug 5 11:42:02 CEST 2013 · https://mail.python.org/pipermail/python-dev/2013-August/127789.html

Hi Larry,

On Mon, Aug 5, 2013 at 10:48 AM, Larry Hastings <larry at hastings.org> wrote:
> Question 4: Return converters returning success/failure?

The option generally used elsewhere is: if we throw an exception, we
return some special value; but the special value doesn't necessarily
mean by itself that an exception was set.  It's a reasonable solution
because the caller only needs to call PyErr_Occurred() for one special
value, rather than every time.  See for example any call to
PyFloat_AsDouble().

A bientôt,

Armin.

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[Python-Dev] The Return Of Argument Clinic