matplotlib.axis.Axis.get_ticklines

Axis.get_ticklines(minor=False)

Return this Axis' tick lines as a list of Line2D.

Warning

Ticks and their constituent parts, including tick lines, are not persistent. Various operations can create, delete, and modify the tick instances; see Tick objects.

You should generally use Axis.set_tick_params / Axis.get_tick_params to define and query tick styling; see Styling ticks (tick parameters).