Building the product · Independent · 26 Oct 2026

se2p/pynguin

The PYthoN General UnIt Test geNerator is a test-generation tool for Python

← Building the product
Verified26 Oct 2026

Radar check

What we found when we opened it. Every bar is one fact, with its date.

Alive100

Last code pushed 24 Oct 2026, one day before this check.

Releases100

Latest release 0.48.0 on 15 Oct 2026.

Maturity90

Public since July 2020, a little over 6 years.

Adoption63

1,394 stars and 104 forks.

Activity100

413 commits and 6 new issues in the last 90 days.

Community80

36 contributors. 3 pull requests merged in 90 days.

Security40

No security policy file says how to report a problem. No published security advisories.

Licence MIT: permissive: use it for anything, keep the noticeSetup effort 3 of 5Payoff 4 of 5
How the bars are scored
  • Alive. Days since the last code push: a week or less 100, a month 90, three months 70, six months 50, a year 30, eighteen months 15, older 0.
  • Releases. Age of the latest GitHub release, on a similar scale; no bar when the project publishes no releases.
  • Maturity. Age of the project: eight years 100, five 90, three 70, two 55, one 40, six months 25, younger 10.
  • Adoption. Stars on a log scale: 100,000 stars is 100, 10,000 is 80, 1,000 is 60, 100 is 40.
  • Activity. Commits in the last 90 days: 300 or more 100, 100 85, 30 65, 10 45, any 25.
  • Community. People who have contributed: 100 or more 100, 30 80, 10 60, 5 40, 2 25, one 10.
  • Security. A published security policy 80, none 40; published advisories are listed, not scored.

Checked by Repo Radar on 26 Oct 2026 from the repository on GitHub.

In simple English

Writing tests for code takes a lot of time and effort. This tool creates tests for your Python programs automatically. It looks at your code and builds test files for you. You must run it inside a sealed box because it executes your code while it works. It is free to use and comes from a university research team.

What it is

Pynguin is a test generation tool for Python programs that uses search-based algorithms to find test cases. It inspects your functions and generates unit tests to check that your code runs correctly.

What it is good for

Solo builders who want to add automated tests to existing Python code without writing every test by hand.

Stars1.4k
LicenceMIT
Latest0.48.0 (2026-10-15)checked 26 Oct 2026
Last code change2026-10-24
Written inPython
Setup effort
3 / 5
Payoff
4 / 5
Good
  • Saves hours of writing test files by hand.
  • Works on existing Python codebases without manual setup.
  • Uses the permissive MIT licence.
Watch for
  • Executes your code during test generation, which can wipe data if run carelessly.
  • Is a research prototype, so generated tests may need manual cleanup.
  • Requires Python 3.10 or newer to run.
Replaces

writing unit tests by hand

Works well with

pytest

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Install
python3 -m venv venv
source venv/bin/activate
pip install pynguin

Independent: reviewed for Repo Radar outside the daily editions. Every independent repository

On Stack Radar: Build & Ship › Testing & Quality › Code Testing.

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