PemJa

What is it?

PemJa is an open source cross language call framework based on FFI. It aims to provide a high-performance

framework of calling between different languages.

Where to get it

Python binary installers for the latest released version are available at the Python package index

pip install pemja

Java Maven Dependency

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>pemja</artifactId>
    <version>{version}</version>
</dependency>

Dependencies

NumPy - Adds support for large, multi-dimensional arrays, matrices and high-level mathematical functions to operate on these arrays

Installation from sources

Prerequisites for building PemJa:

Unix-like environment (we use Linux, Mac OS X), Windows
Git
Maven (we recommend version 3.2.5 and require at least 3.1.1)
Java 8 or 11 (Java 9 or 10 may work) with $JAVA_HOME set correctly
Python >= 3.8 (we recommend version 3.8, 3.9, 3.10, 3.11, 3.12)

NOTE for windows:

Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools"
The compressed package in folder dist must be uncompressed and use the following command to install pip install dist/$packageName$

git clone https://github.com/alibaba/pemja.git
cd pemja
mvn clean install -DskipTests
pip install -r dev/dev-requirements.txt
python setup.py sdist
pip install dist/*.tar.gz

Usage

String path = ...;
PythonInterpreterConfig config = PythonInterpreterConfig
    .newBuilder()
    .setPythonExec("python3") // specify python exec, use "python" on Windows
    .addPythonPaths(path) // add path to search path
    .build();

PythonInterpreter interpreter = new PythonInterpreter(config);

// set & get
interpreter.set("a", 12345);
interpreter.get("a"); // Object
interpreter.get("a", Integer.class); // Integer

// exec & eval
interpreter.exec("print(a)");

// invoke functions
interpreter.exec("import str_upper");
String result = interpreter.invoke("str_upper.upper", "abcd");
// Object invoke(String name, Object... args);
// Object invoke(String name, Object[] args, Map<String, Object> kwargs);

// invoke object methods
/*
// invoke.py
class A:
       def __init__(self):
           self._a = 0
   
       def get_value(self):
           return self._a
   
       def add(self, n):
           self._a += n
   
       def add_all(self, *args):
           for item in args:
               self._a += item
               return self._a
   
       def minus(self, n):
           self._a -= n
           return self._a
*/

interpreter.exec("import invoke");
interpreter.exec("a = invoke.A()");
interpreter.invokeMethod("a", "add", 3);
interpreter.invokeMethod("a", "minus", 2);
interpreter.invokeMethod("a", "add_all", 1, 2, 3);


// python callback java methods
/*
// invoke_callback.py
from pemja import findClass

StringBuilder = findClass('java.lang.StringBuilder')
Integer = findClass('java.lang.Integer')

def callback_java():
    sb = StringBuilder()
    sb.append('pemja')
    sb.append('java')
    sb.append('python')
    sb.append(Integer.toHexString(Integer.MAX_VALUE))
    return sb.toString()
*/
interpreter.exec("import call_back")
print(interpreter.invoke("call_back.callback_java"))

Documentation

Metadata

Release files for pemja 0.5.8

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for pemja 0.5.8
File	Size	Uploaded
pemja-0.5.8.tar.gz	53.2 kB	Oct 17, 2026	Details

Built distributions (wheels)

Table of built distributions (wheels) for pemja 0.5.8
File	Interpreter	ABI	Platform	Reset
pemja-0.5.8-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl 307.5 kB Oct 17, 2026	CPython 3.12	CPython 3.12	Linux glibc 2.17+ ARM64	Details
pemja-0.5.8-cp312-cp312-manylinux1_x86_64.whl 65.7 kB Oct 17, 2026	CPython 3.12	CPython 3.12	Linux glibc 2.5+ x86-64	Details
pemja-0.5.8-cp312-cp312-macosx_11_0_arm64.whl 53.3 kB Oct 17, 2026	CPython 3.12	CPython 3.12	macOS 11.0+ ARM64	Details
pemja-0.5.8-cp312-cp312-macosx_10_9_x86_64.whl 52.2 kB Oct 17, 2026	CPython 3.12	CPython 3.12	macOS 10.9+ x86-64	Details
pemja-0.5.8-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl 303.5 kB Oct 17, 2026	CPython 3.11	CPython 3.11	Linux glibc 2.17+ ARM64	Details
pemja-0.5.8-cp311-cp311-manylinux1_x86_64.whl 64.4 kB Oct 17, 2026	CPython 3.11	CPython 3.11	Linux glibc 2.5+ x86-64	Details
pemja-0.5.8-cp311-cp311-macosx_11_0_arm64.whl 53.2 kB Oct 17, 2026	CPython 3.11	CPython 3.11	macOS 11.0+ ARM64	Details
pemja-0.5.8-cp311-cp311-macosx_10_9_x86_64.whl 51.8 kB Oct 17, 2026	CPython 3.11	CPython 3.11	macOS 10.9+ x86-64	Details
pemja-0.5.8-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl 299.8 kB Oct 17, 2026	CPython 3.10	CPython 3.10	Linux glibc 2.17+ ARM64	Details
pemja-0.5.8-cp310-cp310-manylinux1_x86_64.whl 64.5 kB Oct 17, 2026	CPython 3.10	CPython 3.10	Linux glibc 2.5+ x86-64	Details
pemja-0.5.8-cp310-cp310-macosx_11_0_arm64.whl 53.4 kB Oct 17, 2026	CPython 3.10	CPython 3.10	macOS 11.0+ ARM64	Details
pemja-0.5.8-cp310-cp310-macosx_10_9_x86_64.whl 52.0 kB Oct 17, 2026	CPython 3.10	CPython 3.10	macOS 10.9+ x86-64	Details
pemja-0.5.8-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl 297.8 kB Oct 17, 2026	CPython 3.9	CPython 3.9	Linux glibc 2.17+ ARM64	Details
pemja-0.5.8-cp39-cp39-manylinux1_x86_64.whl 64.2 kB Oct 17, 2026	CPython 3.9	CPython 3.9	Linux glibc 2.5+ x86-64	Details
pemja-0.5.8-cp39-cp39-macosx_11_0_arm64.whl 53.4 kB Oct 17, 2026	CPython 3.9	CPython 3.9	macOS 11.0+ ARM64	Details
pemja-0.5.8-cp39-cp39-macosx_10_9_x86_64.whl 52.0 kB Oct 17, 2026	CPython 3.9	CPython 3.9	macOS 10.9+ x86-64	Details
pemja-0.5.8-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl 292.8 kB Oct 17, 2026	CPython 3.8	CPython 3.8	Linux glibc 2.17+ ARM64	Details
pemja-0.5.8-cp38-cp38-manylinux1_x86_64.whl 301.4 kB Oct 17, 2026	CPython 3.8	CPython 3.8	Linux glibc 2.5+ x86-64	Details
pemja-0.5.8-cp38-cp38-macosx_11_0_arm64.whl 53.3 kB Oct 17, 2026	CPython 3.8	CPython 3.8	macOS 11.0+ ARM64	Details
pemja-0.5.8-cp38-cp38-macosx_10_9_x86_64.whl 51.8 kB Oct 17, 2026	CPython 3.8	CPython 3.8	macOS 10.9+ x86-64	Details

Total release size: 2.6 MB

Release files / pemja-0.5.8.tar.gz

Download URL	pemja-0.5.8.tar.gz
Size	53.2 kB
Tags	Source
SHA-256 checksum How to use checksums	`a664ccb2df4cee97b57c98136656d481e42952796d096efb4171c9634b829217`
BLAKE2b-256 checksum How to use checksums	`65c0bad46331f69dd64ed2b4278e7aa064be79da6668e77fdba35fd92af42e3a`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL	pemja-0.5.8-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size	307.5 kB
Tags	CPython 3.12 Linux glibc 2.17+ ARM64
SHA-256 checksum How to use checksums	`53ad5dbfdd2680fcf2bd95c12ca80f69cb357010b21f3d770087f733ed54e0fb`
BLAKE2b-256 checksum How to use checksums	`c0981abd33bdf03b824aa8ea5d655cd33b2bdb8a983209f1604ed5c85b44386d`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp312-cp312-manylinux1_x86_64.whl

Download URL	pemja-0.5.8-cp312-cp312-manylinux1_x86_64.whl
Size	65.7 kB
Tags	CPython 3.12 Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`a11dfd6919878790f77e1d5a38775e969234c51c45759c057c80ec0a9c983317`
BLAKE2b-256 checksum How to use checksums	`3648cb222c2a74fc8bc4d7cc765a2e80986f1e5218365f3032f24f8d3e90fe50`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp312-cp312-macosx_11_0_arm64.whl

Download URL	pemja-0.5.8-cp312-cp312-macosx_11_0_arm64.whl
Size	53.3 kB
Tags	CPython 3.12 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`53961214045d1c4263eb15fd10c7d27aae07ffb2364d3eb17787e2dca541ee64`
BLAKE2b-256 checksum How to use checksums	`1d7f4917b70dab7fcf975c0915b0c5c29ff1412660f5b88261a9e29c9988023d`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp312-cp312-macosx_10_9_x86_64.whl

Download URL	pemja-0.5.8-cp312-cp312-macosx_10_9_x86_64.whl
Size	52.2 kB
Tags	CPython 3.12 macOS 10.9+ x86-64
SHA-256 checksum How to use checksums	`e2636692a7c09d6690e5b629794abea645982e6cb1427ad74501f837e2ac9d9b`
BLAKE2b-256 checksum How to use checksums	`f95c9d187da2ec9eeb6333fa69dc324a0106317f457f4aa0f007545644fc7830`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL	pemja-0.5.8-cp311-cp311-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size	303.5 kB
Tags	CPython 3.11 Linux glibc 2.17+ ARM64
SHA-256 checksum How to use checksums	`7c5b084c4f9d0542793c109035e1641a7cfce486d65b608ac8013d61abf9511e`
BLAKE2b-256 checksum How to use checksums	`821fb2f3c4bbfb6ac38ca44485057015d2dfa0e1db062c9351d0f8bd8d43fc55`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp311-cp311-manylinux1_x86_64.whl

Download URL	pemja-0.5.8-cp311-cp311-manylinux1_x86_64.whl
Size	64.4 kB
Tags	CPython 3.11 Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`5224ac53f9f2ae56376095ee41ad99c99c2b3122c93ad9af1fbe45372473e1ba`
BLAKE2b-256 checksum How to use checksums	`caee61669d63a7eb65641ee19d53b15bc37d4e3e26582b96cf129ffd23b480f4`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp311-cp311-macosx_11_0_arm64.whl

Download URL	pemja-0.5.8-cp311-cp311-macosx_11_0_arm64.whl
Size	53.2 kB
Tags	CPython 3.11 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`dcba0d58945efffc256801a83cfb69cfdc185e2e18db32c2e51192ee4882fcb0`
BLAKE2b-256 checksum How to use checksums	`c647b87eb98b1f29f0f33b0cf3f883c21fd827bc0629f55a3085e29ea1899bb8`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp311-cp311-macosx_10_9_x86_64.whl

Download URL	pemja-0.5.8-cp311-cp311-macosx_10_9_x86_64.whl
Size	51.8 kB
Tags	CPython 3.11 macOS 10.9+ x86-64
SHA-256 checksum How to use checksums	`d2aafdb9fe5c191626118f4273b79f6cfff1128291529c8e12ffc39821c5b58d`
BLAKE2b-256 checksum How to use checksums	`932c954e625585de8c6ed9f81d44127882d5a3563787f252f1afc634e581628e`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL	pemja-0.5.8-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size	299.8 kB
Tags	CPython 3.10 Linux glibc 2.17+ ARM64
SHA-256 checksum How to use checksums	`24a8461cf82208188f90e01e6df9755f7c97d0085be7c7bf626bef601af6ebb9`
BLAKE2b-256 checksum How to use checksums	`9cc08b0d7127920e3cf90b43a4d8561ee36aa1b097912a18c5c4d8037c91dc1e`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp310-cp310-manylinux1_x86_64.whl

Download URL	pemja-0.5.8-cp310-cp310-manylinux1_x86_64.whl
Size	64.5 kB
Tags	CPython 3.10 Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`dc5a7491bfc7301b5e0aafae023c2279503cab69e8117f9153c1048f32d88c48`
BLAKE2b-256 checksum How to use checksums	`65703ef829a8722d9d430fb7b494b19ef29b183ddcbb6c558c0a9f3a7eb3ae7b`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp310-cp310-macosx_11_0_arm64.whl

Download URL	pemja-0.5.8-cp310-cp310-macosx_11_0_arm64.whl
Size	53.4 kB
Tags	CPython 3.10 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`be3f1ae39ba52ccc87d1b62134fb25337adffdfcf12b064877b686e4fd7a6a1c`
BLAKE2b-256 checksum How to use checksums	`3953790165671154e5425781f2af8fc534519409f4e4e0549fcf0dfb3a59a38f`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp310-cp310-macosx_10_9_x86_64.whl

Download URL	pemja-0.5.8-cp310-cp310-macosx_10_9_x86_64.whl
Size	52.0 kB
Tags	CPython 3.10 macOS 10.9+ x86-64
SHA-256 checksum How to use checksums	`82e815e72b217b5756ed3688e5aeedd6acbbcfc1c6869fbe106add8e66520300`
BLAKE2b-256 checksum How to use checksums	`244a9cd496a578af7ad23ee919e32a6224fa5667a14b16ca911317be77181d93`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL	pemja-0.5.8-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size	297.8 kB
Tags	CPython 3.9 Linux glibc 2.17+ ARM64
SHA-256 checksum How to use checksums	`93ef837984898c476754aa83504360d1b91b93197b1ce1c0a92d66813f03bdc4`
BLAKE2b-256 checksum How to use checksums	`87826723a17d138513bacd438838e2568a77a8b292a3eee96937fd99e3cc75f4`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp39-cp39-manylinux1_x86_64.whl

Download URL	pemja-0.5.8-cp39-cp39-manylinux1_x86_64.whl
Size	64.2 kB
Tags	CPython 3.9 Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`9c7641a04cedb94b6755ee328e8b1f195d8e243283d1d72496bea377fd7619ff`
BLAKE2b-256 checksum How to use checksums	`025cc1c685a5e5b10328cb991f87ff851a056b9ccb7ab2183cc55ff9c5dbf701`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp39-cp39-macosx_11_0_arm64.whl

Download URL	pemja-0.5.8-cp39-cp39-macosx_11_0_arm64.whl
Size	53.4 kB
Tags	CPython 3.9 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`b15eee31e1b845dd19a17c4dd7a060b9bff8b5738ad92fb0164627efcdfbd414`
BLAKE2b-256 checksum How to use checksums	`01c0c68a7920eb8445bc04c070501a8ee916ab9f357a3d4ab119499970d22ced`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp39-cp39-macosx_10_9_x86_64.whl

Download URL	pemja-0.5.8-cp39-cp39-macosx_10_9_x86_64.whl
Size	52.0 kB
Tags	CPython 3.9 macOS 10.9+ x86-64
SHA-256 checksum How to use checksums	`b079bead74eeb6246f875b82ecf7651850a0831103ec7604b74bd64d1d2f676a`
BLAKE2b-256 checksum How to use checksums	`c504a1738a4ae8d1b49cb8b8c542aab326776c765d6fde907627f2b6d8a3f3fc`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl

Download URL	pemja-0.5.8-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
Size	292.8 kB
Tags	CPython 3.8 Linux glibc 2.17+ ARM64
SHA-256 checksum How to use checksums	`267b1f637f6ffe5cb603e061fc00f6fbe3bfe0fef4b5692adbeea8e8179cb4c9`
BLAKE2b-256 checksum How to use checksums	`453282f77ed6d85c0d19f8433c5c873b8fa97fb5b25c3c6cefc27489e2abac72`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp38-cp38-manylinux1_x86_64.whl

Download URL	pemja-0.5.8-cp38-cp38-manylinux1_x86_64.whl
Size	301.4 kB
Tags	CPython 3.8 Linux glibc 2.5+ x86-64
SHA-256 checksum How to use checksums	`6da6678857ef5da367474bf1091d86e319048412f5ac2b284b99312e501a557b`
BLAKE2b-256 checksum How to use checksums	`d289fd228851c6159136b2c476e16543e25615593015d075932d1c9b765b61da`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp38-cp38-macosx_11_0_arm64.whl

Download URL	pemja-0.5.8-cp38-cp38-macosx_11_0_arm64.whl
Size	53.3 kB
Tags	CPython 3.8 macOS 11.0+ ARM64
SHA-256 checksum How to use checksums	`f1821d9549259b82636f48359ae58109e8f9a4404309e9b8c3d76b3582dff730`
BLAKE2b-256 checksum How to use checksums	`a7b5bdd6d1171bf34a0ba7f3298bba8816f79d9ac8d8b156195eeed0b6d77085`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`

Release files / pemja-0.5.8-cp38-cp38-macosx_10_9_x86_64.whl

Download URL	pemja-0.5.8-cp38-cp38-macosx_10_9_x86_64.whl
Size	51.8 kB
Tags	CPython 3.8 macOS 10.9+ x86-64
SHA-256 checksum How to use checksums	`fbee033fe2a4a785411e801344e3168bf3e8a805fea408144bd2d0c186c0e366`
BLAKE2b-256 checksum How to use checksums	`5c9a8c2ce8e5bbccde25c69c178692c55655b308a69d5b438cc31dffad694c9f`
Upload date	Oct 17, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.13`