NumPy dtype API improvement suggestion
I am interested in suggesting an API improvement for NumPy. I wish to make it so that the following code: @np.dtype class Point: x: np.int16 y: np.int16 would be equivalent to the following code: Point = np.dtype([('x', np.int16), ('y', np.int16)])
I am willing to submit the code changes required to make this happen.
Better would be to have an object like NamedTuple in typing that would allow
class Point(DType): x: np.int16 y: np.int16
On Sun, Jul 26, 2020 at 3:22 PM Eyal Kutz eyal.kutz@gmail.com wrote:
I am interested in suggesting an API improvement for NumPy. I wish to make it so that the following code: @np.dtype class Point: x: np.int16 y: np.int16 would be equivalent to the following code: Point = np.dtype([('x', np.int16), ('y', np.int16)])
I am willing to submit the code changes required to make this happen. _______________________________________________ NumPyDiscussion mailing list NumPyDiscussion@python.org https://mail.python.org/mailman/listinfo/numpydiscussion
Hi,
Would it be possible to also allow a byte offset for the field? e.g.,
class Point(np.struct): x: np.field('i4', offset=8) y: np.field('<f8', offset=32)
Best,
Yu
On Sun, Jul 26, 2020 at 9:32 AM Kevin Sheppard kevin.k.sheppard@gmail.com wrote:
Better would be to have an object like NamedTuple in typing that would allow
class Point(DType): x: np.int16 y: np.int16
On Sun, Jul 26, 2020 at 3:22 PM Eyal Kutz eyal.kutz@gmail.com wrote:
I am interested in suggesting an API improvement for NumPy. I wish to make it so that the following code: @np.dtype class Point: x: np.int16 y: np.int16 would be equivalent to the following code: Point = np.dtype([('x', np.int16), ('y', np.int16)])
I am willing to submit the code changes required to make this happen. _______________________________________________ NumPyDiscussion mailing list NumPyDiscussion@python.org https://mail.python.org/mailman/listinfo/numpydiscussion
NumPyDiscussion mailing list NumPyDiscussion@python.org https://mail.python.org/mailman/listinfo/numpydiscussion
On Sun, 20200726 at 17:31 +0100, Kevin Sheppard wrote:
Better would be to have an object like NamedTuple in typing that would allow
class Point(DType): x: np.int16 y: np.int16
I agree with this type of use case (whatever the syntax is). But I think there are too many small issues around it currently to do that in NumPy. For that the new DTypes need to move along a bit further, so that we do not lockin nice syntax with features that have lots of quirks. See also: https://numpy.org/neps/nep0041improveddtypesupport.html https://numpy.org/neps/nep0042newdtypes.html
I think you could do much of such syntax now, but I would suggest to do it outside of NumPy proper (at least the experimentation) at this time for that reason. Hopefully, it won't be too long until we can think of creating such API for good inside NumPy.
Cheers,
Sebastian
On Sun, Jul 26, 2020 at 3:22 PM Eyal Kutz eyal.kutz@gmail.com wrote:
I am interested in suggesting an API improvement for NumPy. I wish to make it so that the following code: @np.dtype class Point: x: np.int16 y: np.int16 would be equivalent to the following code: Point = np.dtype([('x', np.int16), ('y', np.int16)])
I am willing to submit the code changes required to make this happen. _______________________________________________ NumPyDiscussion mailing list NumPyDiscussion@python.org https://mail.python.org/mailman/listinfo/numpydiscussion
NumPyDiscussion mailing list NumPyDiscussion@python.org https://mail.python.org/mailman/listinfo/numpydiscussion
participants (4)

Eyal Kutz

Feng Yu

Kevin Sheppard

Sebastian Berg