A Python Interpreter written in Rust
A Python-3 (CPython >= 3.5.0) Interpreter written in Rust :snake: :scream: :metal:.
RustPython requires Rust latest stable version (e.g 1.43.0 at May 24th 2020). To check Rust version:
rustc --versionIf you wish to update,
rustup update stable.
To build RustPython locally, do the following:
$ git clone https://github.com/RustPython/RustPython $ cd RustPython # if you're on windows: $ powershell scripts\symlinks-to-hardlinks.ps1 # --release is needed (at least on windows) to prevent stack overflow $ cargo run --release demo.py Hello, RustPython!
Or use the interactive shell:
$ cargo run --release Welcome to rustpython >>>>> 2+2 4
You can also install and run RustPython with the following:
$ cargo install rustpython $ rustpython Welcome to the magnificent Rust Python interpreter >>>>>
Or through the
$ conda install rustpython -c conda-forge $ rustpython
You can compile RustPython to a standalone WebAssembly WASI module so it can run anywhere.
$ wapm install rustpython $ wapm run rustpython >>>>> 2+2 4
You can build the WebAssembly WASI file with:
cargo build --release --target wasm32-wasi --features="freeze-stdlib"
Note: we use thefreeze-stdlibto include the standard library inside the binary.
RustPython has an very experimental JIT compiler that compile python functions into native code.
By default the JIT compiler isn't enabled, it's enabled with the
$ cargo run --features jit
This requires autoconf, automake, libtool, and clang to be installed.
To compile a function, call
def foo(): a = 5 return 10 + a
foo.jit() # this will compile foo to native code and subsequent calls will execute that native code assert foo() == 15
Interested in exposing Python scripting in an application written in Rust, perhaps to allow quickly tweaking logic where Rust's compile times would be inhibitive? Then
examples/mini_repl.rsmay be of some assistance.
RustPython is in development, and while the interpreter certainly can be used in interesting use cases like running Python in WASM and embedding into a Rust project, do note that RustPython is not totally production-ready.
Contribution is more than welcome! See our contribution section for more information on this.
Checkout those talks on conferences:
Although RustPython is a fairly young project, a few people have used it to make cool projects:
Currently along with other areas of the project, documentation is still in an early phase.
You can read the online documentation for the latest release.
You can also generate documentation locally by running:
$ cargo doc # Including documentation for all dependencies $ cargo doc --no-deps --all # Excluding all dependencies
Documentation HTML files can then be found in the
Contributions are more than welcome, and in many cases we are happy to guide contributors through PRs or on gitter. Please refer to the development guide as well for tips on developments.
With that in mind, please note this project is maintained by volunteers, some of the best ways to get started are below:
Most tasks are listed in the issue tracker. Check issues labeled with
good first issueif you wish to start coding.
To enhance CPython compatibility, try to increase unittest coverage by checking this article: How to contribute to RustPython by CPython unittest
Another approach is to checkout the source code: builtin functions and object methods are often the simplest and easiest way to contribute.
You can also simply run
./whats_left.shto assist in finding any unimplemented method.
Chat with us on gitter.
Our code of conduct can be found here.
These are some useful links to related projects:
This project is licensed under the MIT license. Please see the LICENSE file for more details.