---
id: 1401
title: "Making PyPI's test suite 81% faster"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2025/05/01/making-pypis-test-suite-81-faster/"
published_at: "2025-05-01 13:00"
tags: ["supply-chain", "open-source", "pypi", "python", "testing", "pytest", "engineering-practice"]
phying_url: "https://phying.com/item/1401"
lang: en
---

# Making PyPI's test suite 81% faster

## Summary

Trail of Bits cut PyPI's Warehouse test suite from 163 to 30 seconds via pytest-xdist parallelization, Python 3.12 sys.monitoring coverage, optimized test discovery, and trimmed imports.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2025-05-01 13:00
- **Original:** https://blog.trailofbits.com/2025/05/01/making-pypis-test-suite-81-faster/
- **Phying News:** https://phying.com/item/1401