Learn Python’s Path Manipulation in 2 minutes

OS vs Pathlib Showdown

If you don’t have access to this article, read free here.

Introduction

Python provides two key ways to handle file and directory paths: **os and `pathlib`**. Both modules offer path-related operations but differ significantly in their approach. This article will compare them, helping you decide when to use each one.

Photo by Andrea Piacquadio

Key Differences Between os and pathlib

The **os** module has been part of Python for a long time. It offers a low-level interface to interact with the operating system, including file path manipulation.

The **pathlib** module, introduced in Python 3.4, provides an object-oriented interface for handling filesystem paths. It simplifies working with paths by treating them as objects instead of plain strings.

Key Differences between os and pathlib

Example

os vs pathlib examples

Performance Benchmark

In typical benchmarks, **os tends to be faster than `pathlib` for simpler tasks like joining paths, checking file existence, or getting directory listings. For actual IO operations (reading, writing, etc.), the performance difference is negligible** because the overhead is dominated by the filesystem or disk access speed, not by the path manipulation itself.

Hence, os is better suited for performance-critical tasks where you’re working with a large number of paths and need every bit of speed. Whereas, pathlib ensures readability and maintainability. It’s more intuitive and Pythonic, and while it is slightly slower in most cases, the difference is typically small and unlikely to matter for most applications.

Conclusion

Both os and pathlib are excellent modules for file path manipulation, but they cater to different use cases. For newer projects, especially those exclusively using Python 3.4+, pathlib offers a cleaner, more readable interface. However, osremains essential for projects requiring backward compatibility.

In Plain English 🚀

Thank you for being a part of the **In Plain English** community! Before you go:

• Be sure to clap and follow the writer ️👏️️
• Follow us: **X | [LinkedIn](https://www.linkedin.com/company/inplainenglish/) | [YouTube](https://www.youtube.com/channel/UCtipWUghju290NWcn8jhyAw) | [Discord](https://discord.gg/in-plain-english-709094664682340443) | [Newsletter](https://newsletter.plainenglish.io/)**
• Visit our other platforms: **CoFeed | [Differ](https://differ.blog/)**
• More content at **PlainEnglish.io**