Python abi3t: what is it?

Learn what the abi3t and the limited C API are and what that means for Python users. This article explains what the limited C API and the abi3t are to Python developers who don't have experience with C extensions. 15 days of Python 3.15 To celebrate the release of Python 3.15, over the next 15 business days I'll be writing about a new 3.15 feature every day. Explained clearly and with examples so you don't have to sift through the changelog. Subscribe to receive this free email series: Enroll for free 🐍🚀 If you want, you can also check the schedule of the upcoming emails. Python wheels A Python wheel is the binary file that you download from PyPI every time you “pip install” a Python package. Conversely, it's also the binary file you build when you're getting ready to publish your project to PyPI so that others can use it. If you use uv to create a packageable project, cd into it, and then build it, you'll notice that uv builds a Python wheel for you: % uv init --package pkgtest…