AttributeError: module 'os' has no attribute 'add_dll_directory'

This error occurs when the add_dll_directory() function is not available in the os module. This function was added in Python 3.8 and is not available in earlier versions.

To fix this error, you can either upgrade your Python version to 3.8 or later, or use a workaround such as setting the PATH environment variable to include the directory containing the DLL files you need to use.

For example, if you are getting this error when trying to import a module that requires a DLL file, you can add the directory containing the DLL file to your PATH environment variable before importing the module:

import os
os.environ['PATH'] = '/path/to/dll/files;' + os.environ['PATH']

# Now you can import the module that requires the DLL file
import my_module

Make sure to replace `/path/to/dll/files` with the actual path to the directory containing the DLL files you need to use.