PyCoder’s Weekly: Issue #724: Unit Testing Performance, Ordering, FastAPI, and More (March 3, 2026)

This PyCoder's Weekly issue explores unit testing for performance changes and lexicographical ordering in Python. It includes a comparison calculator for Django app hosting and a guide to building APIs with FastAPI. There's also information about serving private files with Django and S3, and error handling in FastAPI applications. Another article discusses CLI subcommands with lazy imports in Python 3.15. The issue features a technical guide on self-driving car technology, and a piece on managing shared data science code with Git submodules. A podcast introduces the Datastar framework and the Zen of DevOps is presented. The dangers of using Python's Pickle and an alternative approach to ORMs are also covered. Several projects are highlighted, including an inventory management system and tools for extensions and plotting. Finally, the issue lists multiple Python-related events happening soon.