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...
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has a well established, mature codebase
maintained by a average size development team
with decreasing Y-O-Y commits -
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took an estimated 3 years of effort (COCOMO model)
starting with its first commit in July, 2005
ending with its most recent commit about 1 month ago
Quick Reference
BSD 3-clause "New" or "Revised" License
Permitted
Commercial Use
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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
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30 Day SummaryJun 27 2025 — Jul 27 2025
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12 Month SummaryJul 27 2024 — Jul 27 2025
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