python-zope-hookable 5.0.1 Zope hookable
This package supports the efficient creation of hookable objects, which are callable objects that are meant to be optionally replaced. The idea is that you create a function that does some default thing and make i hookable. Later, someone can modify what it does by calling its sethook method and changing its implementation. All users of the function, including those that imported it, will see the change.