Project Summary
Traitlets is a pure Python library enabling:
the enforcement of strong typing for attributes of Python objects (typed attributes are called "traits");
dynamically calculated default values;
automatic validation and coercion of trait attributes when attempting a change;
registering for receiving notifications when trait values change;
reading configuring values from files or from command line arguments - a distinct layer on top of traitlets, so you may use traitlets without the configuration machinery.
Its implementation relies on the descriptor pattern, and it is a lightweight pure-python alternative of the traits library.
In a Nutshell, Traitlets...
- ...
- ...
-
...
has a well established, mature codebase
maintained by a average size development team
with increasing Y-O-Y commits -
...
took an estimated 3 years of effort (COCOMO model)
starting with its first commit in July, 2005
ending with its most recent commit 4 months ago
Quick Reference
BSD 3-clause "New" or "Revised" License
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
-
...
there are over 3,000 projects on the Open Hub with security vulnerabilities reported against them
-
...
anyone with an Open Hub account can update a project's tags
-
...
use of OSS increased in 65% of companies in 2016
-
...
learn about Open Hub updates and features on the Open Hub blog
30 Day SummaryDec 27 2025 — Jan 26 2026
|
12 Month SummaryJan 26 2025 — Jan 26 2026
|
