What to expect from this blog post Bootstrapping the extension module Brief introduction to PSBTs Building a simple PSBT with Rust Type hints for our native class Conclusion What to expect from this blog post This blog post is meant to be an introduction to PyO3 by walking the reader through the build process of a non-trivial extension module in Rust using PyO3. Some familiarity with Python and Rust is recommended to get the most out of this post, basic understanding of Bitcoin concepts may be required to fully grasp the code samples.