GraalPy – A high-performance embeddable Python 3 runtime for Java

1. graalpython

   1 17 1,451 10.0 Python

   GraalPy – A high-performance embeddable Python 3 runtime for Java

   

   The number of patches is going down with time and many are trivial one liners, e.g. uvloop

   https://github.com/oracle/graalpython/blob/b907353de1b72a14e...

       -        self.cython_always = False

2. Sevalla

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3. PythonKit

   2 8 2,083 2.8 Swift

   Swift framework to interact with Python.

   

   I haven't seen embedding using graal/vm, or inter-op using the native JVM FFI.

   There is (active, 2K stars) https://github.com/pvieito/PythonKit and I've heard of people being able to deploy apps with python on the app store. YMMV.

4. libpython-clj

   3 28 1,152 4.3 Clojure

   Python bindings for Clojure

   

   FWIW we've had full Java/Python integration in Clojure for awhile now, courtesy of Chris Neurnberger and libpython-clj: https://github.com/clj-python/libpython-clj

   If you're into that sort of thing.

   Self-interest disclosure: I'm a major contributor and heavy user.

5. hy

   4 66 5,267 8.7 Python

   A dialect of Lisp that's embedded in Python

   

   > I am willing to live with Python as the Lisp we deserve to have

   You can have your cake and eat it too https://github.com/hylang/hy

6. jep

   5 5 1,426 6.2 C

   Embed Python in Java

   

   jep[0] has existed for a while now, and does what GraalPy is doing quite well.

   I'm using it for similar purposes as stated and for that it works quite well. A research group I am collaborating with does a lot of their work in one Java application (ImageJ for microscopy), so by integrating my Python processing code into that application, it finds its way a lot quicker into the daily workflows of everyone in that group.

   Most recently I've also extended the jep setup to include optional Python version bootstrapping via uv[1], so that I can be sure that the plugins I'm writing have to correct Python version available.

   [0]: https://github.com/ninia/jep

   [1]: https://github.com/astral-sh/uv

7. uv

   6 148 66,128 10.0 Rust

   An extremely fast Python package and project manager, written in Rust.

   

   jep[0] has existed for a while now, and does what GraalPy is doing quite well.

   I'm using it for similar purposes as stated and for that it works quite well. A research group I am collaborating with does a lot of their work in one Java application (ImageJ for microscopy), so by integrating my Python processing code into that application, it finds its way a lot quicker into the daily workflows of everyone in that group.

   Most recently I've also extended the jep setup to include optional Python version bootstrapping via uv[1], so that I can be sure that the plugins I'm writing have to correct Python version available.

   [0]: https://github.com/ninia/jep

   [1]: https://github.com/astral-sh/uv

8. maturin

   7 40 4,835 9.5 Rust

   Build and publish crates with pyo3, cffi and uniffi bindings as well as rust binaries as python packages

   

   Note: there is basic GraalPy support in Maturin[0] and PyO3[1], the problem is often that packages require older Maturin/PyO3 versions and/or they use CPython-isms, semi-public APIs, etc., but it is getting better[2].

   It is fair to say that large projects with a huge set of dependencies will likely face some compatibility issues, but we're working on ironing this out. There is GraalPy support in setup-python GitHub action. GraalPy is supported in the manylinux image [3]. Hopefully soon also in cibuildwheel [4].

   [0] https://github.com/PyO3/maturin/pull/1645 (merged)

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10. PyO3

    8 158 14,267 9.6 Rust

    Rust bindings for the Python interpreter

    

11. jiter

    9 5 446 7.8 Rust

    Fast iterable JSON parser.

    

12. manylinux

    10 16 1,613 9.3 Shell

    Python wheels that work on any linux (almost)

    

    [3] https://github.com/pypa/manylinux/pull/1520 (merged)

13. cibuildwheel

    11 11 2,080 9.6 Python

    🎡 Build Python wheels for all the platforms with minimal configuration.

    

14. maven-hocon-extension

    12 1 31 6.1 Java

    Apache maven

    

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