In 5846924 Victor restored

• _PyLong_Copy()
• _PyLong_FromDigits()
• _PyLong_New()
• _PyLong_Sign()

It seems reasonable to include _PyLong_NumBits as well, since like the others there isn't a great replacement.

Will it be restored in the next beta 3.13 release, or will I have to wait until the first 3.14 alpha release?

I cannot make that call, but I made #119418 against 3.14 for now (it can be backported for 3.13 if that's what people decide). Eventually it seems like a good idea to make this public.

You can modify pywin32 to call the bit_length() method which returns a Python int object. Then if you need a size_t, you can call PyLong_AsSize_t.

If this function is called by one project, we should consider making it public, rather than restoring the old private function.

You can modify pywin32 to call the bit_length() method which returns a Python int object. Then if you need a size_t, you can call PyLong_AsSize_t.

If this function is called by one project, we should consider making it public, rather than restoring the old private function.

How would I access the built-in bit_length() method within the C API?

How would I access the built-in bit_length() method within the C API?

PyObject_CallMethod(obj, "bit_length", NULL)

(Not taking a view on whether that justifies not restoring the function though)

A code search in PyPI top 7,500 projects found other projects:

• mariadb (1.1.10)
• pickle5 (0.0.12)
• zodbpickle (3.2)

pickle5 and zodbpickle contain copies of the Python source code, but MariaDB is a good usage example. So maybe it's worth it to add a function.

I created issue gh-119714: [C API] Add PyLong_GetNumBits() function.

A code search in PyPI top 7,500 projects found other projects:

@encukou also identified that panda3d uses it: https://github.com/panda3d/panda3d/blob/adb92428856853019583f398d27c5d34e44a9343/panda/src/putil/bitArray_ext.cxx#L28

Function restored by commit e50fac9