`__ctype_{be,le}__` attributes missing for `ctypes.c_*_complex` types

[jorenham]

Bug report

Bug description:

I was working on adding support for the fancy new complex ctypes types to numpy.ctypeslib ¹, but ran into the problem that the c_{float,double,longdouble}_complex types do not have the __ctype_{be,le}__ attributes that e.g. their non-complex counterparts have:

>>> import ctypes as ct
>>> ct.c_float.__ctype_le__
<class 'ctypes.c_float'>
>>> ct.c_float_complex.__ctype_le__
Traceback (most recent call last):
  File "<python-input-2>", line 1, in <module>
    ct.c_float_complex.__ctype_le__
AttributeError: type object 'c_float_complex' has no attribute '__ctype_le__'

I checked Python 3.14.4 and 3.15.0a8.

CPython versions tested on:

3.14

Operating systems tested on:

Linux

Linked PRs

• gh-148464: Add missing __ctype_le/be__ attributes for complex types in the ctype module #148485

Footnotes

1. NumPy relies on these attributes when converting e.g. numpy.dtype(">d") to ctypes.c_double.__ctype_be__ using numpy.ctypeslib.as_ctypes_type (docs). ↩

[skirpichev]

c_longdouble_complex

Note, that these attributes are not available on c_longdouble as well. I don't see how we can change this.

[jorenham]

c_longdouble_complex

Note, that these attributes are not available on c_longdouble as well. I don't see how we can change this.

Eh, long double sucks anyway 😛. I'm already happy that you're able to fix the complex float and double cases.