PyRank
zopefoundation

zc-lockfile

Basic portable implementation of interprocess locks using file-locking primitives.
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

zc-lockfile has 3.2M monthly downloads and 20 GitHub stars. Version 4.0 supports Python 3.9+, first published in 2007.

It is minimally maintained, last released in Sep 2025.

It is built on top of setuptools. It is used by 24 tracked packages, including dvc, cherrypy and zodb.

GitHub topics include maintained.

Downloads
Day
96.1K
Week
670.2K
Month
3.2M
Stars
20
Forks
14
Issues
2
Version
4.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
40
Popularity
30
Adoption
60
Community
80
Provenance
0
How the maintenance status was determined
Last commit
288 days ago
Monthly downloads
3,196,985
Active
Activity within 30 days
Stable
Activity within 31-180 days
• Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
3,196,985
Stars
20
Stars per 1k downloads
0.01
Industry Standard
> 10,000,000 monthly downloads
• Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
95,746
Month daily avg
106,566
Momentum
-10.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.9
Cutting Edge
Minimum supported version is 3.12 or newer
• Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
ZPL-2.1
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
• Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
292 days ago
Total releases
13
Releases/year
0.7
Rapid
Last release within 365 days and > 12 releases/year
• Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
286
Monthly downloads
3,196,985
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
• Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
60
 
Issue Burden
-
per 1k stars
Discussions
-
per 1k stars
Fork Ratio
2042.9%
contrib / forks
Stale Release
No
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 48.5K
Windows 4.7K
macOS 1.5K

Python Versions

3.12
26.7% 13.3K
3.11
23.9% 11.9K
3.13
23.3% 11.6K
3.10
16.6% 8.3K
3.14
9.5% 4.7K

Top Countries

1. US US
39.3K
2. KR KR
2.3K
3. SG SG
2.0K
4. GB GB
1.6K
5. IE IE
1.3K
6. IN IN
1.1K
7. NL NL
1.0K
8. BE BE
990
9. HK HK
871
10. DE DE
596
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
ZPL-2.1
First Release
July 18, 2007
Last Release
9 months ago
Last Commit
9 months ago
Latest Version
4.0
Total Releases
13
Contributors
286
Open PRs
0
Archived
No
Author
Zope Foundation
Python Versions
3 3.9 3.10 3.11 3.12 3.13
Wheels
py2 py3
Keywords
lock
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links