No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
traits has 1.2M monthly downloads and 463 GitHub stars. Version 7.1.0 supports Python 3.8+, first published in 2013.
It is stably maintained under a permissive license, last released in Dec 2025.
It is used by 62 tracked packages, including ovito, nipype and hyperspy.
GitHub topics include dataclasses, observer-pattern and types.
Package Insights
Package Risks
- No releases in 98 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
65
Popularity
56
Adoption
60
Community
60
Provenance
0
How the maintenance status was determined
Last commit
102 days ago
Monthly downloads
1,155,415
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
1,155,415
Stars
463
Stars per 1k downloads
0.40
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
19,026
Month daily avg
38,514
Momentum
-50.6%
((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
BSD
•
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
201 days ago
Total releases
25
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
97
Monthly downloads
1,155,415
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
68
Issue Burden
490.3
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
107.8%
contrib / forks
Stale Release
98d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
10.8K
Windows
1.2K
macOS
443
Python Versions
3.12
53.7%
6.2K
3.11
16.3%
1.9K
3.10
13.7%
1.6K
3.13
12.0%
1.4K
3.9
4.4%
505
Top Countries
1.
US
8.2K
US
2.
CN
1.1K
CN
3.
HK
490
HK
4.
SG
485
SG
5.
IN
387
IN
6.
IE
284
IE
7.
KR
193
KR
8.
DE
184
DE
9.
NL
150
NL
10.
GB
149
GB
Dependencies
0
14 optional dependencies
- defusedxml[test]
- enthought-sphinx-theme[docs]
- flake8[test]
- flake8-ets[test]
- mypy[test]
- numpy[examples]
- numpy[test]
- pillow[examples]
- pyface[test]
- setuptools[test]
- sphinx[docs]
- sphinx[test]
- sphinx-copybutton[docs]
- traitsui[test]
Used By
62
- ovito
- nipype
- hyperspy
- apptools
- envisage
- mayavi
- hyperspy-gui-traitsui
- pyxem
- acoular
- enable
- chaco
- exspy
- zeztz-flow
- scimath
- cannon
- python-microscopy
- mayavi-dev
- aolab-bmi3d
- cytoflow
- capsul
- qsmxt
- quantstudio
- karabo-karathon
- karabo-native
- karabo-gui
- frat-brain
- hyperspyui
- micaflow
- pyptv
- rabies
- marss
- populse-mia
- flydra-analysis
- nipype-ancp
- espm
- diffpy-srxconfutils
- nipype2pydra
- graphpype
- geo-importer
- petprep-hmc
- bmcs-matmod
- spherets
- petprep-extract-tacs
- diffpy-srxplanargui
- gtrace
- agl-ocr-reader
- jigna
- spotdipy
- lyman
- alarm4pdcloud
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
BSD
First Release
December 13, 2013
Last Release
6 months ago
Last Commit
3 months ago
Latest Version
7.1.0
Total Releases
25
Contributors
97
Open PRs
4
Archived
No
Author
Enthought
Python Versions
3
Wheels
cp310
cp311
cp312
cp313
cp314
cp36
cp37
cp38
cp39
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh