os.getresuid() and os.getresgid() are not present in MacOS/Python 3.14.5, but are documented

[athornton]

Documentation

The Python os module documentation documents os.getresuid() and os.getresgid().

However, these don't exist on Python 3.14.5 on MacOS, at least:

adam@m3-wired:~/git/collab-group$ python
Python 3.14.5 (main, May 10 2026, 10:21:34) [Clang 17.0.0 (clang-1700.6.4.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.getresgid()
Traceback (most recent call last):
  File "<python-input-1>", line 1, in <module>
    os.getresgid()
    ^^^^^^^^^^^^
AttributeError: module 'os' has no attribute 'getresgid'. Did you mean: 'getegid'?
>>> os.getresuid()
Traceback (most recent call last):
  File "<python-input-2>", line 1, in <module>
    os.getresuid()
    ^^^^^^^^^^^^
AttributeError: module 'os' has no attribute 'getresuid'. Did you mean: 'geteuid'?
>>>

They are present on Linux/Python 3.13.5.

It looks like the corresponding system calls do not exist on MacOS (at least, there's no man page for them, and there is for geteuid()). So I think "Availability" for those two should read "Unix, not WASI, not macOS" or something similar.

[aiwonderland]

???

[YuTaicheng]

Good first issue, could you please assign this to me?

[aiwonderland]

I'm not a core contributor

[serhiy-storchaka]

What other os functions are not available on macOS? Is "Unix, not macOS" used anywhere?

[picnixz]

The availability directive definition states:

If not separately noted, all functions that claim “Availability: Unix” are supported on macOS, iOS and Android, all of which build on a Unix core.

So, if something is not available on macOS, it should be noted even if it's the only function that would have this note.