PyRank
python-cffi

cffi

A Foreign Function Interface package for calling C libraries from Python.
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

cffi has 1.1B monthly downloads and 270 GitHub stars. Version 2.1.0 supports Python 3.9+, first published in 2012.

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

It is built on top of pycparser. It is used by 1,831 tracked packages, including cryptography, pynacl and pyzmq.

Downloads
Day
35.6M
Week
250.1M
Month
1.1B
Stars
270
Forks
82
Issues
22
Version
2.1.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
53
Adoption
70
Community
90
Provenance
0
How the maintenance status was determined
Last commit
3 days ago
Monthly downloads
1,082,964,200
• 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
1,082,964,200
Stars
270
Stars per 1k downloads
0.00
• 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
35,732,320
Month daily avg
36,098,807
Momentum
-1.0%
((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
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
0 days ago
Total releases
78
Releases/year
5.5
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
91
Monthly downloads
1,082,964,200
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
89
 
Issue Burden
81.5
per 1k stars
Discussions
33.3
per 1k stars
Fork Ratio
111.0%
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 25.6M
Windows 1.0M
macOS 323.4K

Python Versions

3.12
38.1% 9.2M
3.11
24.3% 5.8M
3.10
18.0% 4.3M
3.13
13.2% 3.2M
3.9
6.5% 1.6M

Top Countries

1. US US
20.1M
2. IN IN
1.1M
3. IE IE
816.5K
4. DE DE
719.8K
5. SG SG
634.6K
6. NL NL
602.9K
7. FR FR
287.1K
8. GB GB
283.5K
9. JP JP
273.5K
10. CA CA
239.9K

Package Information

License
MIT
First Release
June 18, 2012
Last Release
1 hr ago
Last Commit
3 days ago
Latest Version
2.1.0
Total Releases
78
Contributors
91
Open PRs
17
Archived
No
Author
Armin Rigo, Maciej Fijalkowski
Python Versions
3 3.9 3.10 3.11 3.12 3.13 3.14
Wheels
cp26 cp27 cp310 cp311 cp312 cp313 cp314 cp32 cp33 cp34 cp35 cp36 cp37 cp38 cp39
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links