Is Py4J Safe?

Py4J — Nerq Trust Score 72.2/100 (B grade). Score based on 2 independent trust signals. Last analyzed: 2026-09-08

Py4J is a Python package with a Nerq Trust Score of 72.2/100 (B), based on 3 independent data dimensions. Last analyzed: 2026-09-08 Security: 90/100. Popularity: 100/100. Data sourced from PyPI registry, GitHub repository, NVD, OSV.dev, and OpenSSF Scorecard. Last updated: 2026-09-08. Machine-readable data (JSON).

Safety Guide: Py4J

What is Py4J?

Py4J is a Python package — Enables Python programs to dynamically access arbitrary Java objects.

How to Verify Safety

Run pip audit or safety check. Review on PyPI for download stats.

You can also check the trust score via API: GET /v1/preflight?target=py4j

Key Safety Concerns for Python package

When evaluating any Python package, watch for: dependency vulnerabilities, malicious uploads, maintenance status.

Measured Signals

Py4J has a Nerq Trust Score of 72/100 (B). This score is a composite of automated measurements of security, maintenance, community, and quality signals.

Key Takeaways

• Py4J has a Trust Score of 72/100 (B).
• The score is a measured composite — it is not a suitability judgment. Evaluate the individual signals against your own requirements.
• Query the current measured values via the Nerq API.

Disclaimer: Nerq trust scores are automated measurements based on publicly available signals. They are not endorsements, verdicts, or guarantees of suitability. Always evaluate the signals against your own requirements.