For Google Colab users, the Path.home() location is /root/, which is deleted when the runtime is cleared. As runtimes are cleared fairly often, this means re-downloading the KBs. Perhaps there is a way to alter Path.home from pathlib? Another option is to allow the user to enter a cache folder, which Colab users could set to their Google Drive (fwiw just a regular folder as seen by python within Colab), thus making the download permanent.