PyRank
cclib

cclib

Parsers and algorithms for computational chemistry logfiles
PyPI GitHub
More links
Download Stats Bug Tracker Changelog Documentation
Monthly downloads
43.3K
Weekly downloads
8.3K
GitHub stars
428

Downloads in the 30 and 7 days to October 10, 2026. Refreshed weekly.

Package Information

Latest Version
1.8.1
Requires Python
>=3.7
Licence
BSD 3-Clause License
Last Release
2 years ago
First Release
June 15, 2006
Total Releases
35
No reported malware or high/critical advisories · Details

The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
59
Adoption
46
Community
90
Provenance
0
How the maintenance status was determined
Last commit
8 days ago
Monthly downloads
43,298
• 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
43,298
Stars
428
Stars per 1k downloads
9.88
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
1,184
Month daily avg
1,443
Momentum
-17.9%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
More insights and metrics
Python version support tiers
requires_python
>=3.7
Cutting Edge
Minimum supported version is 3.14 or newer
Modern
Minimum supported version is 3.11 to 3.13
• Legacy
Supports 3.10 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
BSD 3-Clause License
• 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
942 days ago
Total releases
35
Releases/year
1.7
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
77
Monthly downloads
43,298
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
85
 
Issue Burden
397.2
per 1k stars
Discussions
9.3
per 1k stars
Fork Ratio
40.5%
contrib / forks
Stale Release
933d
 
PR Velocity
Quiet
 
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 637
Windows 21
macOS 16

Python Versions

3.12
52.8% 334
3.11
27.8% 176
3.13
7.7% 49
3.10
6.6% 42
3.14
5.1% 32

Top Countries

1. US US
865
2. DE DE
75
3. CN CN
34
4. SG SG
15
5. JP JP
8
6. MX MX
6
7. CA CA
4
8. PK PK
4
9. CL CL
3
10. GB GB
3

Weekly Downloads

GitHub Stars

Dependencies

4
13 optional dependencies

Used By

42
View all 42 dependents

Repository details

Forks
190
Issues
170
Last Commit
1 week ago
Contributors
77
Open PRs
33
Archived
No

Data and sources

Tracking Since
September 26, 2026
Data Updated
October 11, 2026
Data Freshness
Fresh
Sources and methodology