calculating cloud-to-cloud distance

[maxkulicki]

I am trying to develop a script to remove points from one point cloud based on overlap with a second point cloud. I have been doing it manually by first calculating cloud-to-cloud distance with a very small max distance, and then filtering based on value.

I was trying to automate this using pycc and cccorelib but i can't find the function to compute cloud-to-cloud distance, or the function for filtering based on value. Are these functions implemented?