PyRank
elarivie

readerwriterlock

Python 3 implementation of the Readers-writers problem
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

readerwriterlock has 2.7M monthly downloads and 104 GitHub stars. Version 1.0.9 supports Python 3.6+, first published in 2018.

It is showing limited recent maintenance under a permissive license, last released in Sep 2021.

It is used by 43 tracked packages, including localstack-ext, firebolt-sdk and spotapi.

Downloads
Day
78.4K
Week
575.8K
Month
2.7M
Stars
104
Forks
11
Issues
3
Version
1.0.9

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
30
Popularity
39
Adoption
70
Community
10
Provenance
0
How the maintenance status was determined
Last commit
1045 days ago
Monthly downloads
2,702,749
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
2,702,749
Stars
104
Stars per 1k downloads
0.04
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
82,257
Month daily avg
90,092
Momentum
-8.7%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.6
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
MIT
• 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
1765 days ago
Total releases
10
Releases/year
1.2
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
3
Monthly downloads
2,702,749
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
25
 
Issue Burden
28.8
per 1k stars
Discussions
19.2
per 1k stars
Fork Ratio
27.3%
contrib / forks
Stale Release
719d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 65.4K
Windows 977
macOS 418

Python Versions

3.11
51.2% 33.1K
3.14
34.7% 22.4K
3.12
6.9% 4.4K
3.10
4.1% 2.7K
3.13
3.1% 2.0K

Top Countries

1. US US
62.9K
2. SG SG
837
3. ES ES
403
4. GB GB
383
5. CN CN
337
6. DE DE
248
7. HK HK
211
8. NL NL
203
9. BR BR
121
10. IN IN
108

Package Information

License
MIT
First Release
March 31, 2018
Last Release
4 years ago
Last Commit
2 years ago
Latest Version
1.0.9
Total Releases
10
Contributors
3
Open PRs
0
Archived
No
Author
Éric Larivière
Python Versions
3.7 3.8 3.9
Wheels
py3
Keywords
rwlock read-write lock lock priority reader writer fair read write thread synchronize
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links