Have you ever wondered why Python is referred to as CPython and what is the Python C-API everyone keeps talking about? Come to this talk and find out! We'll briefly take a look at the C-API, how we can use it to extend Python's functionality, and how we can write Python C extensions using pybind11. After writing our Python C extension, we'll package it so users on all major operating systems can easily install it using pip. We'll take a look at how we can do this by building cross-platform wheels for Linux, macOS, and Windows and automatically pushing them to PyPI!