PyPI Stats
casact

chainladder

Actuarial reserving in Python
PyPI GitHub
Downloads
Day
1.8K
Week
10.1K
Month
39.7K
Stars
243
Forks
100
Issues
69
Version
0.9.1

Package Insights

What's this?
Score breakdown - each component scores 0–100, weighted by percentage
Maintenance
100
Popularity
53
Adoption
65
Community
70
How the maintenance status was determined
Last commit
5 days ago
Monthly downloads
39,675
• 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
39,675
Stars
243
Stars per 1k downloads
6.12
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
1,438
Month daily avg
1,322
Momentum
+8.8%
((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
MPL-2.0
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
96 days ago
Total releases
78
Releases/year
8.8
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
30
Monthly downloads
39,675
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
80
 
Issue Burden
284.0
per 1k stars
Discussions
382.7
per 1k stars
Fork Ratio
30.0%
contrib / forks
Stale Release
90d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

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

Downloads by OS

Linux 736
macOS 5
Windows 2

Python Versions

3.10
44.6% 307
3.13
29.8% 205
3.11
12.1% 83
3.12
11.8% 81
3.8
1.7% 12

Top Countries

1. US US
371
2. GB GB
315
3. CH CH
30
4. IE IE
8
5. NL NL
6
6. NO NO
6
7. IN IN
5
8. BM BM
2
9. DE DE
2
10. FR FR
2

Dependencies

7
28 optional dependencies

Used By

0
Not used by any tracked packages

Package Information

License
MPL-2.0
First Release
June 26, 2017
Last Release
3 months ago
Last Commit
5 days ago
Latest Version
0.9.1
Total Releases
78
Contributors
30
Open PRs
2
Archived
No
Python Versions
3 3.9 3.10 3.11 3.12 3.13 3.14
Wheels
py3
Keywords
actuarial reserving insurance chainladder IBNR
Topics
reserving actuarial chainladder python pandas actuary scikit-learn estimators
Tracking Since
January 6, 2026
Data Updated
May 3, 2026
Data Freshness
Fresh

Links