Rust bindings for the Python interpreter (by PyO3)

PyO3 Alternatives

Similar projects and alternatives to PyO3

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better PyO3 alternative or higher similarity.

PyO3 reviews and mentions

Posts with mentions or reviews of PyO3. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-05.
  • Encapsulation in Rust and Python
    4 projects | | 5 Apr 2024
    Integrating Rust into Python, Edward Wright, 2021-04-12 Examples for making rustpython run actual python code Calling Rust from Python using PyO3 Writing Python inside your Rust code — Part 1, 2020-04-17 RustPython, RustPython Rust for Python developers: Using Rust to optimize your Python code PyO3 (Rust bindings for Python) Musing About Pythonic Design Patterns In Rust, Teddy Rendahl, 2023-07-14
  • Rust Bindings for the Python Interpreter
    1 project | | 20 Feb 2024
  • Polars – A bird's eye view of Polars
    4 projects | | 13 Feb 2024
  • In Rust for Python: A Match from Heaven
    2 projects | | 3 Jan 2024
    This story unfolds as a captivating journey where the agile Flounder, representing the Python programming language, navigates the vast seas of coding under the wise guidance of Sebastian, symbolizing Rust. Central to their adventure are three powerful tridents: cargo, PyO3, and maturin.
  • Segunda linguagem
    3 projects | /r/brdev | 10 Dec 2023
  • Calling Rust from Python
    2 projects | | 8 Oct 2023
    I would not recommend FFI + ctypes. Maintaining the bindings is tedious and error-prone. Also, Rust FFI/unsafe can be tricky even for experienced Rust devs.

    Instead PyO3 [1] lets you "write a native Python module in Rust", and it works great. A much better choice IMO.


  • Python 3.12
    6 projects | | 2 Oct 2023
    Same w/ Rust and Python, this is really neat because now each thread could have a GIL without doing exactly what you said. The pyO3 commit to allow subinterpreters was merged 21 days ago, so this might "just work" today:
  • Removing Garbage Collection from the Rust Language (2013)
    9 projects | | 11 Sep 2023
    I expected someone to write a rust-based scripting language which tightly integrated with rust itself.

    In reality, it seems like the python developers and toolchain are embracing rust enough to reduce the benefits to a new alternative.

  • Bytewax: Stream processing library built using Python and Rust
    2 projects | | 25 Jul 2023
    Hey HN! I am one of the people working on Bytewax. Bytewax came out of our experience working with ML infrastructure at GitHub. We wanted to use Python because we could move fast, the team was very fluent in it, and the rest of our tooling was Python-native already. We didn't want to introduce JVM-based solutions into our stack because of the lack of experience and the friction we had trying to get Python-centric tooling working with existing solutions like Flink.

    In our research, we found Timely Dataflow (, and the Naiad project ( as well as PyO3 ( and we thought we found a match made in heaven :). Bytewax leverages both of these projects and builds on them to provide a clean API (at least we think so) and table stakes features like connectors, state recovery, and cloud-native scaling. It has been really cool to learn about the dataflow computation model, Rust, and how to wrangle the GIL with Rust and Python :P.

    Would love to get your feedback :).

    `pip install bytewax` to get started. We have a page of guides ( with ready-to-run examples.

  • Tell HN: Rust Is the Superglue
    3 projects | | 15 Jul 2023
    You can practice your Rust skills by writing performant and/or gluey extensions for higher-level language such as NodeJS (checkout napi-rs) and Python or complementing JS in the browser if you target Webassembly.

    For instance, checkout Llama-node for an involved Rust-based NodeJS extension. Python has PyO3, a Rust-Python extension toolset:

    They can help you leverage your Rust for writing cool new stuff.

  • A note from our sponsor - SaaSHub | 24 Apr 2024
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Basic PyO3 repo stats
about 9 hours ago

PyO3/pyo3 is an open source project licensed under GNU General Public License v3.0 or later which is an OSI approved license.

The primary programming language of PyO3 is Rust.

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