Open Source Project


RustPython is a Python interpreter written in Rust.


RustPython represents an innovative fusion of Rust’s performance and safety features with Python’s flexibility and ease of use. At its core, RustPython is a Python interpreter developed in Rust, designed to offer several key advantages and features that cater to a broad spectrum of development needs.

The primary purpose of RustPython is to provide a high-performance, safe alternative to the traditional Python interpreter, CPython. By leveraging Rust’s strengths, including its safety characteristics and concurrency model, RustPython aims to enhance the execution efficiency and security of Python code. This makes it an attractive option for developers looking for faster and more reliable Python execution, especially in scenarios where performance and safety are critical.

One of the standout features of RustPython is its ability to compile to WebAssembly, enabling Python code to run directly in web browsers. This capability significantly expands Python’s applicability, allowing developers to utilize Python for client-side web development tasks, traditionally the domain of JavaScript and other web-centric languages. This feature alone opens up new possibilities for Python developers to create interactive web applications and services directly in Python, without the need for transpilation or server-side execution.

Moreover, RustPython supports embedding Python into Rust applications, offering a flexible and powerful scripting solution within Rust projects. This allows developers to leverage Python’s expressiveness and extensive ecosystem within the context of Rust’s performance-oriented environment, facilitating a best-of-both-worlds approach to application development. Developers can thus write critical performance-sensitive components in Rust while using Python for more dynamic or rapidly changing logic.

RustPython also demonstrates its utility in specialized applications, such as high-performance Abstract Syntax Tree (AST) parsing, as evidenced by its use in projects like Ruff. This showcases RustPython’s capability to efficiently parse and execute Python code, further underscoring its potential as a versatile tool for developers.

The project is not just a technical endeavor but also a testament to the potential of combining different programming languages to harness their unique strengths. RustPython’s development is a significant step toward integrating Python’s widespread popularity and ease of use with Rust’s emerging reputation for performance and safety in software development.

In summary, RustPython offers a compelling alternative to traditional Python interpreters by providing a safer, faster, and web-compatible Python runtime. Its ability to run Python in the browser through WebAssembly, alongside the option to embed Python in Rust applications, positions RustPython as an invaluable tool for developers seeking to explore new horizons in both web development and application scripting.

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