Fredrik Lundh wrote:
Steven Bethard wrote:
Is there a good way to determine if an object is a numeric type?

assert operator.isNumberType(i)

Interesting, thanks! If I read the source right, PyNumber_Check (which operator.isNumberType is an alias for) basically just returns True if the object's type has a __int__ or __float__ method defined:


int
PyNumber_Check(PyObject *o)
{
        return o && o->ob_type->tp_as_number &&
               (o->ob_type->tp_as_number->nb_int ||
                o->ob_type->tp_as_number->nb_float);
}

Did I read that right?

Steve
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