[Numpy-discussion] Automatic custom dtype

Charles R Harris charlesr.harris at gmail.com
Fri Jun 21 14:57:50 EDT 2013


On Fri, Jun 21, 2013 at 12:53 PM, Charles R Harris <
charlesr.harris at gmail.com> wrote:

>
>
> On Fri, Jun 21, 2013 at 9:18 AM, Richard Hattersley <rhattersley at gmail.com
> > wrote:
>
>> On 21 June 2013 14:49, Charles R Harris <charlesr.harris at gmail.com>
>> wrote:
>> > Bit short on detail here ;) How did you create/register the dtype?
>>
>> The dtype is created/registered during module initialisation with:
>>     dtype = PyObject_New(PyArray_Descr, &PyArrayDescr_Type);
>>     dtype->typeobj = &Time360Type;
>>     ...
>>     PyArray_RegisterDataType(dtype)
>>
>> Where Time360Type is my new type definition:
>>     static PyTypeObject Time360Type = { ... }
>> which is initialised prior to the dtype creation.
>>
>> If the detail matters then should I assume this is unexpected
>> behaviour and maybe I can fix my code so it works?
>>
>>
> Hmm, that part looks ok.
>
>
You could check the numpy/core/src/umath/test_rational.c.src code to see if
you are missing something.

Chuck
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