Traitlets is a pure Python library enabling:

* the enforcement of strong typing for attributes of Python objects
  (typed attributes are called "traits")
* notifications on changes of trait attributes
* automatic validation and coercion of trait attributes when attempting
  a change

Its implementation relies on the descriptor pattern.

Traitlets powers the configuration system of IPython and Jupyter and the
declarative API of IPython interactive widgets.

NOTE: Unable to support newer versions due to requiring newer version
of python than is available in Slackware 15.0 (python 3.10).