# oracle/graalpython

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

Repository: https://github.com/oracle/graalpython
Canonical: https://ross.abutalabs.com/products/graalpython
Homepage: https://www.graalvm.org/python/
Language: Python
License: NOASSERTION
License Family: other
Topics: embeddable, graalvm, java, python, python3
Last push: 2026-08-26T07:45:30+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 3060, "days_push": 7, "days_rel": 8, "gap_med": 47.0, "n_releases_24m": 13}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1636, forks 154 (observed 2026-08-28T04:05:14.795769+00:00)

## What it is
GraalPy is a high-performance Python 3.12 implementation for the JVM built on GraalVM. It supports embedding Python in Java applications and compiling Python programs into fast standalone native binaries.

## Use cases
- embed a Python interpreter inside a Java application
- run Python code on the JVM alongside Java libraries
- compile a Python app into a standalone native binary
- replace CPython with a faster Python runtime
- sandbox Python library system access with Java-based permissions
- run pure Python packages like NumPy or PyTorch on GraalVM

## When to choose
- you need first-class Python-Java interoperability on the JVM
- you want to ship Python applications as standalone native executables
- your workload is pure Python and you want GraalVM performance benefits
- you need fine-grained control over Python code's system access from Java

## When to avoid
- you depend heavily on CPython-specific native extensions, which are only experimentally supported
- you need 100% CPython compatibility for your test suite
- you are not on the JVM ecosystem and have no need for GraalVM

## Facets
- artifact type: library
- maturity: active
- function: interpreter, programming-language, sdk
- domain: programming-languages, developer-tools, cross-platform
- platform: jvm, cross-platform, python
- tags: graalvm, python-runtime, embeddable, jvm, native-image, polyglot

## Member repositories
- oracle/graalpython (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:14.795769+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:46:58.681188+00:00, confidence not recorded.
  - readme: https://github.com/oracle/graalpython (fetched 2026-08-28T04:05:14.795769+00:00, sha b959c601dea5)
  - homepage: https://www.graalvm.org/python/ (fetched 2026-08-29T11:20:02.637445+00:00, sha 13d04ca15538)
- Data as of 2026-08-30T08:39:29.467469+00:00.