How to install o3dtut?

Hi, When I run

pcl = o3dtut.get_bunny_mesh().sample_points_poisson_disk(number_of_points=2000)

it raised an error that the “o3dtut” is not defined, but I can’t find the library related to open3d and tutorial. What library is o3dtut? How should I install it? I am a novice, thanks for your advice.

you can find it here: