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Didier VEZINET
, …
Jérôme Kieffer
16
Nov 14
Transition from setup.py to pyproject.toml only, with dynamic args to cythonize
Thanks Oscar and Jerome, Really helps ! So I've implemented the scipy solution, which presumably
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Transition from setup.py to pyproject.toml only, with dynamic args to cythonize
Thanks Oscar and Jerome, Really helps ! So I've implemented the scipy solution, which presumably
Nov 14
Fredrik Bondesson
Nov 12
Difference between Cython 3.2.0 and 3.1.6?
We have been using Cython 3.1.6 succesfully, however when trying to upgrade to 3.2.0 we ran into a
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Difference between Cython 3.2.0 and 3.1.6?
We have been using Cython 3.1.6 succesfully, however when trying to upgrade to 3.2.0 we ran into a
Nov 12
David Lawson
,
da-woods
2
Nov 11
Cython 3.2 - Function signature does not match previous declaration
That's a bug - I've just made a PR for a fix. On 11/11/2025 09:08, David Lawson wrote: I'
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Cython 3.2 - Function signature does not match previous declaration
That's a bug - I've just made a PR for a fix. On 11/11/2025 09:08, David Lawson wrote: I'
Nov 11
Bernie Roesler
,
da-woods
3
Nov 7
"Tuples" of fused types
That works! Thanks. On Nov 5, 2025, at 15:35, da-woods <dw-...@d-woods.co.uk> wrote: You might
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"Tuples" of fused types
That works! Thanks. On Nov 5, 2025, at 15:35, da-woods <dw-...@d-woods.co.uk> wrote: You might
Nov 7
Peter Schay
3
Nov 3
help with struct arrays and buffer formats
Hi again; I managed to get something ultra-simple working which is just fine for my purposes. This
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help with struct arrays and buffer formats
Hi again; I managed to get something ultra-simple working which is just fine for my purposes. This
Nov 3
Muhammad Hawash
,
da-woods
2
Oct 30
Using Cython CFLAGS to enable some feature
In the past I've found that "set" (https://learn.microsoft.com/en-us/windows-server/
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Using Cython CFLAGS to enable some feature
In the past I've found that "set" (https://learn.microsoft.com/en-us/windows-server/
Oct 30
Nils Bruin
, …
Matthias Koeppe
12
Oct 26
Dealing with python version differences across cythonization/compilation/runtime
On Sat, Oct 25, 2025 at 3:17 PM Nils Bruin <bruin...@gmail.com> wrote: > in principle it
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Dealing with python version differences across cythonization/compilation/runtime
On Sat, Oct 25, 2025 at 3:17 PM Nils Bruin <bruin...@gmail.com> wrote: > in principle it
Oct 26
da-woods
,
Johannes Fischer
2
Oct 23
Parallel Programming and Cython talk
I have just watched it. Awesome talk! D Woods schrieb am Dienstag, 21. Oktober 2025 um 15:27:05 UTC-3
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Parallel Programming and Cython talk
I have just watched it. Awesome talk! D Woods schrieb am Dienstag, 21. Oktober 2025 um 15:27:05 UTC-3
Oct 23
аbebus
, …
Stefan Behnel
5
Oct 18
Question about specialization logic for object types in Cython codebase/Cython compiler optimisations
Thanks a lot for the detailed explanation, that's very helpful. I'll definitely benchmark
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Question about specialization logic for object types in Cython codebase/Cython compiler optimisations
Thanks a lot for the detailed explanation, that's very helpful. I'll definitely benchmark
Oct 18
ian macharia
,
da-woods
2
Oct 13
Kivymd app crashing when building kivy on google colab
I've replied on the Github issue that you also posted (https://github.com/cython/cython/issues/
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Kivymd app crashing when building kivy on google colab
I've replied on the Github issue that you also posted (https://github.com/cython/cython/issues/
Oct 13
whoami730
,
da-woods
2
Oct 2
C-style characters
They will get translated into a character literal in C (ie ' '). I don't think we have a
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C-style characters
They will get translated into a character literal in C (ie ' '). I don't think we have a
Oct 2
白隽
,
da-woods
4
Sep 19
cython multithread behavior
Finally,I used with nogil: FspFileSystemStopDispatcher() That's useful! da-woods <dw-git@d-
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cython multithread behavior
Finally,I used with nogil: FspFileSystemStopDispatcher() That's useful! da-woods <dw-git@d-
Sep 19
Tobias Diez
,
Oscar Benjamin
2
Sep 18
How to deal with transitive linker dependencies
Hi Tobias, This is not really a Cython question so much. The issue arises for any projects with C
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How to deal with transitive linker dependencies
Hi Tobias, This is not really a Cython question so much. The issue arises for any projects with C
Sep 18
Mriswithe
,
da-woods
3
Sep 7
Fixing types on the Python side.
I will poke around and see what I can find then. On Sun, Sep 7, 2025, 1:57 PM da-woods <dw-git@d-
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Fixing types on the Python side.
I will poke around and see what I can find then. On Sun, Sep 7, 2025, 1:57 PM da-woods <dw-git@d-
Sep 7
Takeshi Ikuma
,
da-woods
2
Sep 3
Converting fixed-size C pointer to memoryview in the pure Python mode
I think this is a known issue unfortunately and I'm not sure there's a good workaround: https
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Converting fixed-size C pointer to memoryview in the pure Python mode
I think this is a known issue unfortunately and I'm not sure there's a good workaround: https
Sep 3
dg pb
,
Stefan Behnel
4
Sep 2
object's ob_item
dg pb schrieb am 02.09.25 um 21:39: >> On 2 Sep 2025, at 18:21, 'Stefan Behnel' via
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object's ob_item
dg pb schrieb am 02.09.25 um 21:39: >> On 2 Sep 2025, at 18:21, 'Stefan Behnel' via
Sep 2
Ray Speth
,
da-woods
2
Sep 1
Support for combining multiple PYX files in a single module
Hi Ray, As far as possible, everything internal with Cython (ie things we define starting with `
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Support for combining multiple PYX files in a single module
Hi Ray, As far as possible, everything internal with Cython (ie things we define starting with `
Sep 1
Idan Ahal
, …
David Woods
4
Aug 6
Is it possible to use language level 2 with python 3.12?
I'm not sure what a "missing micro" is. However, language_level=2 does still work. The
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Is it possible to use language level 2 with python 3.12?
I'm not sure what a "missing micro" is. However, language_level=2 does still work. The
Aug 6
Paul Smith
,
da-woods
2
Aug 3
Difficulty calling python function from C
Hi Paul, It looks like you got a decent enough answer from the same post on Stack Overflow (https://
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Difficulty calling python function from C
Hi Paul, It looks like you got a decent enough answer from the same post on Stack Overflow (https://
Aug 3
J Wu
,
David Woods
2
Jul 16
Is that possible to generate __pyx_CommonTypesMetaclass_get_module into a single file, instead of in every module?
Hi, It's a known bug. It's been fixed and will be in the next release. Sorry! On 16 July 2025
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Is that possible to generate __pyx_CommonTypesMetaclass_get_module into a single file, instead of in every module?
Hi, It's a known bug. It's been fixed and will be in the next release. Sorry! On 16 July 2025
Jul 16
shakfu
,
da-woods
7
Jul 5
Why does a forward declaration of a struct causes errors in this case?
D Woods wrote: I've had a bit more of a look at it. Thanks! I think the problem is that for
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Why does a forward declaration of a struct causes errors in this case?
D Woods wrote: I've had a bit more of a look at it. Thanks! I think the problem is that for
Jul 5
dgpb
, …
Prakhar Goel
8
Jun 14
Need help with very basics.
I'm not sure you'll get much benefit from this though. Python's own impls (list and tuple
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Need help with very basics.
I'm not sure you'll get much benefit from this though. Python's own impls (list and tuple
Jun 14
Jacob Faibussowitsch US
,
da-woods
2
Jun 11
Controlling placement of `cdef extern from` blocks
I think you can use the "#cython: preliminary_late_includes = True" directive which pushes
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Controlling placement of `cdef extern from` blocks
I think you can use the "#cython: preliminary_late_includes = True" directive which pushes
Jun 11
David Lawson
,
da-woods
2
Jun 8
_Py_HashBytes in 3.12 vs 3.13
Hi David, I think it was hidden in Py3.13 (https://github.com/python/cpython/pull/107026) as private
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_Py_HashBytes in 3.12 vs 3.13
Hi David, I think it was hidden in Py3.13 (https://github.com/python/cpython/pull/107026) as private
Jun 8
John Ehresman
,
da-woods
2
Jun 8
Overridden method in final classes
Hi John - that definitely sounds like a bug. (Sorry for the slow reply) On 24/05/2025 16:19, John
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Overridden method in final classes
Hi John - that definitely sounds like a bug. (Sorry for the slow reply) On 24/05/2025 16:19, John
Jun 8
Peter Schay
,
Prakhar Goel
3
May 18
programmatically get address of struct fields and/or cdef attrs
On Sat, May 17, 2025 at 1:33 PM Prakhar Goel <newt...@gmail.com> wrote: It would be nice if
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programmatically get address of struct fields and/or cdef attrs
On Sat, May 17, 2025 at 1:33 PM Prakhar Goel <newt...@gmail.com> wrote: It would be nice if
May 18
Peter Schay
,
da-woods
3
May 13
Profiling
Thanks for the helpful info. It's great to have cProfile working again and also amazing to see
unread,
Profiling
Thanks for the helpful info. It's great to have cProfile working again and also amazing to see
May 13
John Ehresman
,
da-woods
4
May 13
Simple type aliases in pure-python mode?
Hi John, I'm skeptical that using cython.locals and hints would work Yes - it's a suggestion
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Simple type aliases in pure-python mode?
Hi John, I'm skeptical that using cython.locals and hints would work Yes - it's a suggestion
May 13
Ewan Davies
May 8
Help with cimports in pure python mode
I have a small project with some Python and some Cython modules and I'm successfully using
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Help with cimports in pure python mode
I have a small project with some Python and some Cython modules and I'm successfully using
May 8
Raub Camaioni
,
Marc Weber
2
Apr 22
Compilation of PYX (cython) -> PYI (stub) file converters.
i have done some unfinished work parsing comments here: https://github.com/MarcWeber/py-create-stubs
unread,
Compilation of PYX (cython) -> PYI (stub) file converters.
i have done some unfinished work parsing comments here: https://github.com/MarcWeber/py-create-stubs
Apr 22
