14.06.20 23:45, Ivan Pozdeev via Python-Dev пише:
1. The documentation clearly says that it's supported depending on OS
flavor -- so if I want to know if I can supply it, I need to rather
check `os.name`. Those members are thus redundant.
If the distinction is finer than os.name then I'd need some other,
case-specific check depending on what the distinction is; alternatively,
I could check the function's signature in its metadata if the support is
reflected in it.
Yes, it is finer than os.name. It can depend on the kernel or libc
version (and we do not know which versions are required on every
platform), and there are a lot of platforms besides the main three. The
user should not be expert in all platforms on which his program
potentially can be ran.
The function's signature is the same on all platforms. Just on some
platforms only default value can be passed (None for dir_fd) or only
specific types of argument is accepted (path-like, but not int).
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