PyRank
andrivet

asn1

Python-ASN1 is a simple ASN.1 encoder and decoder for Python 2.7 and 3.5+.
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

asn1 has 1.3M monthly downloads and 110 GitHub stars. Version 3.3.0, first published in 2016.

It is stably maintained under a permissive license, last released in May 2026.

It is built on top of enum-compat. It is used by 22 tracked packages, including app-store-server-library, pymobiledevice3 and pyimg4.

Downloads
Day
44.9K
Week
314.3K
Month
1.3M
Stars
110
Forks
36
Issues
0
Version
3.3.0

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
70
Popularity
44
Adoption
80
Community
30
Provenance
0
How the maintenance status was determined
Last commit
53 days ago
Monthly downloads
1,344,977
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
1,344,977
Stars
110
Stars per 1k downloads
0.08
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
44,902
Month daily avg
44,833
Momentum
+0.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
Not specified
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
Package does not declare a minimum Python version.
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
53 days ago
Total releases
19
Releases/year
2.0
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
2
Monthly downloads
1,344,977
• 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
33
 
Issue Burden
0.0
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
5.6%
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 17.9K
macOS 2.6K
Windows 923

Python Versions

3.12
38.3% 7.7K
3.11
26.5% 5.3K
3.14
14.6% 2.9K
3.10
11.3% 2.3K
3.13
9.4% 1.9K

Top Countries

1. US US
18.1K
2. DE DE
340
3. FR FR
247
4. NL NL
236
5. JP JP
201
6. PL PL
197
7. IN IN
157
8. BR BR
118
9. HK HK
117
10. IE IE
117

Package Information

License
MIT
First Release
December 16, 2016
Last Release
1 month ago
Last Commit
1 month ago
Latest Version
3.3.0
Total Releases
19
Contributors
2
Open PRs
0
Archived
No
Author
Sebastien Andrivet
Python Versions
2.7 3 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14
Wheels
py2 py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links