The document discusses the integration of Rust and Python, including RustPython which implements the Python interpreter in Rust and allows running Python code in the browser or compiling to native code. It also describes several popular Python packages that use Rust such as Cryptography and Pydantic, as well as tools for packaging Python-Rust projects and bundling Python apps into single executables with Rust.

1. Rust
and
Python
John Vandenberg https://github.com/jayvdb

2. 08/09/23
2
RustPython
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https://rustpython.github.io/
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Started May 2018
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Version 0.2 released January 2023
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Includes standard library written in Rust
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70% of the CPython 3.11 test suite passes
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pip works
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RustPython can be compiled to WebAssembly, allowing running Python
code in the web browser
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Has an experimental JIT compiler to compile python to native code

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3
Python packaging
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https://github.com/PyO3 (Pythonium Trioxide)
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setuptools-rust
– 50,000 downloads per day
– https://github.com/PyO3/setuptools-rust
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maturin
– 20,000 downloads per day
– https://github.com/PyO3/maturin

4. 08/09/23
4
Python packages
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Cryptography – Using setuptools-rust
– 7 million downloads per day
– Approx 15th
most downloaded package
– https://github.com/pyca/cryptography
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Pydantic - Using maturin
– 3 million downloads per day
– https://github.com/pydantic/pydantic-core
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Rpds-py - Using maturin
– 2 million downloads per day (dep of jsonschema)
– https://github.com/crate-py/rpds
jsonschema-rs will be
on this list soon.

5. 08/09/23
5
Python packages
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orjson – Using maturin
– 500,000 downloads per day
– https://github.com/ijl/orjson
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LibCST - Using setuptools-rust
– 250,000 downloads per day
– https://github.com/Instagram/LibCST
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Ruff (Python linter) - Using maturin
– 175,000 downloads per day
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polars - Using maturin
– 50,000 downloads per day
– https://github.com/pola-rs/polars

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result
from result import Result, Ok, Err
def divide(a: int, b: int) -> Result[int, str]:
if b == 0:
return Err("Cannot divide by zero")
return Ok(a // b)
values = [(10, 0), (10, 5)]
for a, b in values:
divide_result = divide(a, b)
match divide_result:
case Ok(value):
print(f"{a} // {b} == {value}")
case Err(e):
print(e)
https://github.com/rustedpy/result
4k downloads/day

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7
PyOxidizer
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https://github.com/indygreg/PyOxidizer
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Combines CPython runtime, Python code and dependencies into a single
executable
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Supports Windows, Linux and Mac executable formats
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Also creates installers for Windows, Linux and Mac
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Pyembed crate controls an embedded CPython inside Rust

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8
Python tools
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Package managers like pipenv, poetry, etc
– https://github.com/mitsuhiko/rye
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Also includes Python runtime management, like pyenv
– https://github.com/cnpryer/huak
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Incomplete and not as actively developed
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Vulnerability scanner
– https://github.com/aswinnnn/pyscan
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Static code analysis
– Ruff
– https://github.com/mtshiba/pylyzer

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py2many
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https://github.com/py2many/py2many
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Transpiles subset of Python to:
– C++, Dart, Go, Julia, Kotlin, Nim, Rust, V
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Supports CLI sys.argv and sys.stdout