validator VS PyO3

Compare validator vs PyO3 and see what are their differences.


Simple validation for Rust structs (by Keats)


Rust bindings for the Python interpreter (by PyO3)
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validator PyO3
8 39
897 5,012
- 5.4%
4.8 9.7
8 days ago 3 days ago
Rust Rust
MIT License GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of validator. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-11-21.


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 2021-11-27.
  • CPython
    1 project | | 28 Nov 2021
  • Should I learn Rust coming from Python?
    2 projects | | 27 Nov 2021
    You probably should learn Rust. Aside from the process of learning new and different languages making you a better programmer, rust-cpython, PyO3, or Interoptopus make it easy to expose Python APIs from your Rust code. (eg. So it's easy to compile the same codebase as both a Python module and a WebAssembly module.)
  • What do you NOT like about Rust?
    18 projects | | 21 Nov 2021
    Have you looked into abi_stable, flapigen, interoptopus, cbindgen, PyO3, or rust-cpython?
  • Calling Rust from Python example
    2 projects | | 6 Nov 2021
    This is happening in the form of HPy. Eventually perhaps pyo3 can just target HPy instead of the current CPython API, and everything will just work, but not much seems to be happening on the relevant ticket, so I expect it'll be awhile.
    2 projects | | 6 Nov 2021
    Today, I was playing around with, which describes itself as follows:
  • Strengths and applications of Rust
    5 projects | | 6 Nov 2021
    Personally, I'm not willing to compromise on my GUI look and feel, so I use PyQt or PySide to write my GUIs against the QWidget API (I'm a KDE user and Python is the only language with mature memory-safe bindings to Qt) and, if the project can be structured with a frontend-backend separation, I use rust-cpython or PyO3 to write a backend in Rust that the Python frontend can import. Sort of using Python/Rust as a QWidget analogue to the QML/C++ architecture promoted for Qt Quick. (Which I don't use because it's still too incomplete on Kubuntu 20.04 LTS.)
  • From Python to Rust, should I?
    3 projects | | 2 Nov 2021
    also, check out rust-cpython, PyO3, and maturin, among other things. They're really nice options for using Rust for its strengths and Python for its strengths within the same project.
  • We just massively overdelivered on a project thanks to Rust (and Python bindings)
    9 projects | | 31 Oct 2021
    I haven't done extensive comparisons, but my general experience is that if you are just working on something that can translate to looping over array elements, you can get excellent performance with cython or numba. It is likely on-par with rust performance if you can avoid creating a bunch of temporary/intermediate numpy arrays. I typically only reach for rust as a method for writing a python extension (e.g. using pyo3) if the problem involves more complicated data structures or dealing with json, xml or other file types and possibly instances where multi-threading is important. Even in the case of multi-threading, if there is a natural way to break up an array processing problem you can use cython or numba, release the GIL and then use the `concurrent.futures` module to distribute work. Also it's currently the case that pyo3 can have some performance overhead that you don't see with cython, for example
  • Prototype GIL-less CPython shows nearly 20x speedups with 20 threads and good single-thread performance. Will the GIL be removed at some point, finally?
    4 projects | | 15 Oct 2021
    Rust has py03 which lets you write bindings for python really easily, very cool.
  • Which is the best Rust scripting language for Exploratory Data Analysis (EDA)
    7 projects | | 9 Oct 2021
    I'm not aware of a scripting language that can do all of these things. I'm also confused because this is basically what Python already is, and you can use pyo3 for that.

What are some alternatives?

When comparing validator and PyO3 you can also consider the following projects:

rust-cpython - Rust <-> Python bindings

pybind11 - Seamless operability between C++11 and Python

milksnake - A setuptools/wheel/cffi extension to embed a binary data in wheels

bincode - A binary encoder / decoder implementation in Rust.

rust-numpy - PyO3-based Rust binding of NumPy C-API

py2many - Python to CLike languages transpiler

egui - egui: an easy-to-use immediate mode GUI in pure Rust

wasmtime - Standalone JIT-style runtime for WebAssembly, using Cranelift

Clippy - A bunch of lints to catch common mistakes and improve your Rust code

rustpy - Rust + Python = ????

RustPython - A Python Interpreter written in Rust

napi-rs - A minimal library for building compiled Node.js add-ons in Rust via Node-API