# 10 Years of Meta’s Commitment to Python

[Meta](https://yomu.fyi/company/meta) · Jun 30, 2026

## Summary

Meta has marked ten consecutive years as a sponsor of the Python Software Foundation (PSF) to ensure the language remains robust and sustainable. Python represents the most widely used programming language across Meta's infrastructure, powering applications like Instagram and Threads as well as internal AI research. Beyond financial backing, Meta engineers actively contribute core language features, author Python Enhancement Proposals (PEPs), and build open-source tools such as the Pyrefly type checker. Company sponsorship directly funds the PSF's Developer-in-Residence program, core infrastructure, and security enhancements for the Python Package Index (PyPI). Continued support of the PSF functions as a strategic investment in maintaining the stability of the broader open-source ecosystem.

## Takeaways

- Meta's PSF sponsorship funds the Developer-in-Residence program, which pays full-time developers to address critical Python improvements that volunteer efforts cannot cover.
- PSF funding from corporate sponsors supports core Python infrastructure, including critical security enhancements for the Python Package Index (PyPI).
- Meta engineers actively contribute to Python's ecosystem by authoring PEPs, maintaining core features, and creating open-source developer tooling like the Pyrefly type checker.

**Tags:** [Developer Experience](https://yomu.fyi/topic/developer-experience), [Open Source](https://yomu.fyi/topic/open-source), [Python](https://yomu.fyi/topic/python)

[Read original post](https://engineering.fb.com/2026/06/30/open-source/10-years-of-metas-commitment-to-python)