This demo doesn't run properly. Eg in the 2nd code block I got: "AttributeError: module 'tiledb' has no attribute 'from_csv'". I received this message in the latest TileDB Docker image.
There seems to be a problem running the example under python 3.6 used in the docker container. Investigating. Please ping us (tiledb.com for contacts) and I will let you know when the docker image is updated.