PyRank
pyscf

pyscf

Python module for quantum chemistry
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

pyscf has 336K monthly downloads and 2K GitHub stars. Version 2.13.1 supports Python 3.7+, first published in 2017.

It is actively maintained under a permissive license, last released in Jun 2026.

It is built on top of h5py, numpy and scipy. It is used by 86 tracked packages, including ffsim, pyscf-dispersion and qiskit-addon-sqd.

Downloads
Day
13.2K
Week
89.8K
Month
336.3K
Stars
1.6K
Forks
709
Issues
222
Version
2.13.1

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
73
Adoption
85
Community
100
Provenance
0
How the maintenance status was determined
Last commit
13 days ago
Monthly downloads
336,256
• 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
336,256
Stars
1,622
Stars per 1k downloads
4.82
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
12,832
Month daily avg
11,209
Momentum
+14.5%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.7
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
Apache-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
33 days ago
Total releases
59
Releases/year
6.7
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
168
Monthly downloads
336,256
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
100
 
Issue Burden
136.9
per 1k stars
Discussions
108.5
per 1k stars
Fork Ratio
23.7%
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 20.7K
macOS 515
Windows 46

Python Versions

3.12
78.5% 16.4K
3.11
11.1% 2.3K
3.10
5.1% 1.1K
3.13
3.4% 716
3.8
1.8% 385

Top Countries

1. US US
20.3K
2. DE DE
322
3. BE BE
220
4. IE IE
204
5. SG SG
141
6. CN CN
98
7. NL NL
44
8. TW TW
44
9. CA CA
33
10. JP JP
31

Package Information

License
Apache-2.0
First Release
October 9, 2017
Last Release
1 month ago
Last Commit
2 weeks ago
Latest Version
2.13.1
Total Releases
59
Contributors
168
Open PRs
26
Archived
No
Python Versions
3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14
Wheels
cp27 cp310 cp311 cp34 cp35 cp36 cp37 cp38 cp39 py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links