Python os.supports_dir_fd Method

1. Syntax of Python os.supports_dir_fd Method
2. Example 1: Use os.supports_dir_fd to Get a List of Methods That Permits the Use of Their dir_fd Parameter
3. Example 2: Use os.supports_dir_fd to Check if a Method Permits the Use of Its dir_fd Parameter

Python os.supports_dir_fd method is an efficient way of checking whether a specific OS module allows a method to use their dir_fd parameter or not.

Many platforms provide various functionality, so the dir_fd parameter might be available on some systems and not on others.

Syntax of Python os.supports_dir_fd Method

os.supports_dir_fd

Parameters

It is a non-callable object, so no parameter is required.

Return

The return type of this method is a set object representing all the methods in the OS module that allows the use of their dir_fd parameter.

Example 1: Use os.supports_dir_fd to Get a List of Methods That Permits the Use of Their dir_fd Parameter

import os

List = os.supports_dir_fd

print("Following are the method that allows their parameter to be used: ",List)

Output:

Following are the method that allows their parameter to be used:  {<built-in function link>, <built-in function access>, <built-in function mkfifo>, <built-in function rename>, <built-in function symlink>, <built-in function chown>, <built-in function utime>, <built-in function rmdir>, <built-in function readlink>, <built-in function mkdir>, <built-in function open>, <built-in function chmod>, <built-in function unlink>, <built-in function stat>, <built-in function mknod>}

Note that specifying None for the dir_fd parameter is supported on all OS platforms.

Example 2: Use os.supports_dir_fd to Check if a Method Permits the Use of Its dir_fd Parameter

import os

permission = os.stat in os.supports_dir_fd

print("Does it permit that its parameter is used? ", permission)

permission = os.lstat in os.supports_dir_fd

print("Does it permit that its parameter is used? ", permission)

Output:

Does it permit that its parameter is used?  True
Does it permit that its parameter is used?  False

In the above code, we are checking whether the dir_fd parameter of the os.stat() method is available for use or not.