WebAssembly as a Python extension platform

349 · Christopher Wellons · Jan. 1, 2026, 10:01 p.m.
Summary
This article discusses the potential of using WebAssembly (Wasm) as an extension platform for Python, focusing on its advantages and challenges compared to traditional C extensions. The author explores how Wasm can enable architecture-independent deployments and improve performance significantly, while also critiquing current libraries such as wasmtime-py for their limitations and bugs. The article emphasizes real-world coding examples and pitfalls when interfacing Python with Wasm, particularly addressing memory management and speed enhancements.