This module contains some useful functions on pathnames. The path parameters are either strings or bytes . These functions here are used for different purposes such as for merging, normalizing and retrieving path names in python . All of these functions accept either only bytes or only string objects as their parameters. The result is an object of the same type, if a path or file name is returned. As there are different versions of operating system so there are several versions of this module in the standard library.
Following are some functions of OS Path module.

The OS Path module is a part of the Python standard library that provides a way to interact with the file system. It allows Python programmers to work with file paths in a way that is platform-independent, meaning that it will work on any operating system that Python supports.

The module provides functions for creating, joining, and manipulating file paths, as well as functions for accessing file system information such as file size, modification time, and permissions. It also includes functions for checking if a file or directory exists and for creating new directories.

One of the most useful functions in the OS Path module is os.path.join(). This function takes two or more path components and joins them together into a single path, using the appropriate path separator for the operating system. For example, on Unix systems, the path separator is "/", while on Windows systems it is "". By using os.path.join(), you can create platform-independent file paths in your Python programs.

Another useful function in the OS Path module is os.path.exists(). This function takes a path as an argument and returns True if the file or directory exists, or False if it does not. This can be useful for checking if a file or directory exists before trying to open or manipulate it in your Python program.

Overall, the OS Path module is a powerful tool for working with file paths and the file system in Python, and is an essential part of any Python programmer's toolkit.