RustPython is an open-source Python 3 interpreter implemented in Rust, allowing integration of Python as a scripting language in Rust applications and enabling Python code execution in web browsers via WebAssembly. It aims to provide similar functionalities as other Python implementations like Jython and IronPython while benefiting from Rust's minimal runtime.

The article discusses the integration of Python with WebAssembly, allowing developers to run Python code in edge environments. This capability enhances performance and flexibility, enabling the execution of Python applications closer to users for improved responsiveness. The piece highlights the advantages and potential use cases of this technology in modern web development.