No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
basedpyright has 9M monthly downloads and 3K GitHub stars. Version 1.39.9 supports Python 3.8+, first published in 2024.
It is actively maintained under a permissive license, last released in Jun 2026.
It is built on top of nodejs-wheel-binaries. It is used by 15 tracked packages, including pyemsi, agent-memory-labs and deflateawning-python.
GitHub topics include based, pylance and pyright.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
70
Adoption
60
Community
70
Provenance
0
How the maintenance status was determined
Last commit
3 days ago
Monthly downloads
8,981,168
•
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
8,981,168
Stars
3,453
Stars per 1k downloads
0.38
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
258,572
Month daily avg
299,372
Momentum
-13.6%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.8
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 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
10 days ago
Total releases
116
Releases/year
46.9
•
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
205
Monthly downloads
8,981,168
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
58
Issue Burden
179.3
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
168.0%
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
111.3K
macOS
1.5K
Windows
977
Python Versions
3.12
40.5%
45.8K
3.13
27.5%
31.1K
3.10
12.8%
14.5K
3.14
11.3%
12.8K
3.11
7.9%
8.9K
Top Countries
1.
US
96.4K
US
2.
DE
5.8K
DE
3.
IE
2.1K
IE
4.
NL
1.6K
NL
5.
GB
1.5K
GB
6.
JP
1.4K
JP
7.
IN
818
IN
8.
FI
558
FI
9.
AU
462
AU
10.
TW
455
TW
Dependencies
1
- nodejs-wheel-binaries >=20.13.1
Package Information
License
MIT License
First Release
January 16, 2024
Last Release
1 week ago
Last Commit
3 days ago
Latest Version
1.39.9
Total Releases
116
Contributors
205
Open PRs
29
Archived
No
Python Versions
3
3.8
3.9
3.10
3.11
3.12
3.13
3.14
Wheels
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh