psf/black

Maintenance

Active

Human commits, 30 days

68

Human commits, 90 days

109

Human commits, 365 days

279

Bot share of commits, 365 days

22%

Last commit

Oct 10, 2026 (4 days ago)

Last human commit

Oct 10, 2026 (4 days ago)

Authors, 90 days

53

Last release

Oct 10, 2026 (5 days ago)

Median PR merge time

38 hours

Responsiveness: of 27 recent issues, 93% got a maintainer reply. Median first response: 47 hours.

Sources: Commits, Releases, Merged pull requests, Issues

People

Owner

Organization

Commits sampled

279 since Oct 14, 2025

Authors for half of commits

11

Authors for 80% of commits

65

Contributors

455

Top committers

• cobaltt7: 19% of commits
• sahvx655-wq: 9% of commits
• JelleZijlstra: 5% of commits
• Prateek99-s: 5% of commits
• hauntsaninja: 3% of commits

The top committer changed during this period.

Sources: Commits, Contributors

Stars

Organic, confidence high

Bursts

• May 25, 2018 to Jun 1, 2018: about 1.4k more stars than usual, peak 637 in one day, a spike that tapers off. Outside explanation: a jump in forks.
• May 17, 2019 to May 23, 2019: about 638 more stars than usual, peak 392 in one day, a spike that tapers off. Outside explanation: a jump in forks.
• Jul 30, 2019 to Jul 31, 2019: about 78 more stars than usual, peak 76 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Aug 27, 2020 to Aug 28, 2020: about 279 more stars than usual, peak 183 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Apr 27, 2021 to Apr 28, 2021: about 276 more stars than usual, peak 248 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Oct 7, 2021 to Oct 8, 2021: about 151 more stars than usual, peak 131 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Oct 20, 2021 to Oct 22, 2021: about 339 more stars than usual, peak 152 in one day, a flat block of stars. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jan 30, 2022 to Feb 4, 2022: about 523 more stars than usual, peak 191 in one day, a shape we can't classify. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Feb 8, 2022 to Feb 10, 2022: about 102 more stars than usual, peak 75 in one day, a spike that tapers off. Outside explanation: a jump in forks.
• Mar 16, 2022 to Mar 19, 2022: about 364 more stars than usual, peak 148 in one day, a flat block of stars. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jun 2, 2022 to Jun 4, 2022: about 244 more stars than usual, peak 98 in one day, a flat block of stars. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jun 16, 2022 to Jun 18, 2022: about 185 more stars than usual, peak 111 in one day, a spike that tapers off. Outside explanation: a jump in forks.
• Oct 5, 2022 to Oct 10, 2022: about 333 more stars than usual, peak 90 in one day, a shape we can't classify. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Dec 22, 2022 to Dec 22, 2022: about 72 more stars than usual, peak 80 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jan 21, 2023 to Jan 21, 2023: about 85 more stars than usual, peak 95 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Oct 25, 2023 to Oct 30, 2023: about 1k more stars than usual, peak 604 in one day, a shape we can't classify. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Jan 27, 2024 to Jan 28, 2024: about 74 more stars than usual, peak 73 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Feb 14, 2024 to Feb 20, 2024: about 507 more stars than usual, peak 156 in one day, a shape we can't classify. Outside explanation: a jump in forks.
• Jul 20, 2024 to Jul 21, 2024: about 89 more stars than usual, peak 86 in one day, a spike that tapers off. Outside explanation: a jump in forks, a jump in issues and pull requests.
• Sep 6, 2024 to Sep 9, 2024: about 190 more stars than usual, peak 95 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Nov 8, 2024 to Nov 9, 2024: about 140 more stars than usual, peak 86 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
• Feb 22, 2025 to Feb 23, 2025: about 141 more stars than usual, peak 136 in one day, a spike that tapers off. No outside explanation found, so this burst is unexplained.
• Jul 12, 2025 to Jul 13, 2025: about 114 more stars than usual, peak 101 in one day, a spike that tapers off. Outside explanation: a jump in issues and pull requests.
• Jun 28, 2026 to Jul 2, 2026: about 93 more stars than usual, peak 31 in one day, a shape we can't classify. Outside explanation: a jump in issues and pull requests.

• 4 stars GitHub has since removed (tracked since Oct 14, 2026).

Anyone can buy stars for any repo; bursts alone don't prove the owner did.

• The star history looks organic.

Sources: How star history is analyzed

Risk

Flags

No risk flags.

License

Now

MIT (OSI-approved)

A year ago

MIT (OSI-approved)

Packages

• black (PYPI): latest 26.10.1, published Oct 10, 2026
  Advisories for the latest version: none listed

Package and advisory data: deps.dev and OSV.

OpenSSF Scorecard: 7.8 out of 10 (via deps.dev).

Sources: GitHub: psf/black, deps.dev: PyPI black