Python 3.13 was just released and brings fundamental changes to the language including a new interactive interpreter, experimental support for running in a free-threaded mode, and a Just-In-Time compiler, or JIT. There are also updates to the Python type system, module removals, and docstring improvements among many other changes.

Łukasz Langa is the CPython Developer in Residence at the Python Software Foundation. He joins the show with Sean Falconer to talk about maintaining Python, the evolution of the language, Python optimization, the most impactful changes in Python 3.13, and more.

Sean’s been an academic, startup founder, and Googler. He has published works covering a wide range of topics from information visualization to quantum computing. Currently, Sean is Head of Marketing and Developer Relations at Skyflow and host of the podcast Partially Redacted, a podcast about privacy and security engineering. You can connect with Sean on Twitter @seanfalconer.

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The Big Changes in Python 3.13 with Łukasz Langa