* For some functions, the *path* argument can be not only a string giving a path

name, but also a file descriptor. The function will then operate on the file

referred to by the descriptor. (For POSIX systems, this will use the ``f...``

You can check whether or not *path* can be specified as a file descriptor on

your platform using :data:`os.supports_fd`. If it is unavailable, using it

should be a file descriptor referring to a directory, and the path to operate

on should be relative; path will then be relative to that directory. If the

path is absolute, *dir_fd* is ignored. (For POSIX systems, this will use the

You can check whether or not *dir_fd* is supported on your platform using

:data:`os.supports_dir_fd`. If it is unavailable, using it will raise a

* For functions ith a *follow_symlinks* parameter: If *follow_symlinks* is

``False``, and the last element of the path to operate on is a symbolic link,

the function will operate on the symbolic link itself instead of the file the

the function.)

You can check whether or not *follow_symlinks* is supported on your platform