You are reading documentation for the unreleased version of Matplotlib. Try searching for the released version of this page instead?
Version 2.1.1.post1088+gf4bcca3
matplotlib
Fork me on GitHub

This Page

matplotlib.axis.Tick.contains

Tick.contains(mouseevent)

Test whether the mouse event occurred in the Tick marks.

This function always returns false. It is more useful to test if the axis as a whole contains the mouse rather than the set of tick marks.