The six pyrealsense2 wrappers are stored here: /usr/lib/python3/dist-packages/pyrealsense2 when they should have been stored in /usr/lib/python3.7/dist-packages/pyrealsense2 where there is a python program to import them to /usr/local/lib.
You can manually transfer them to /usr/local/lib from /usr/lib/python3/dist-packages/pyrealsense2 using the cp copy function.
The six pyrealsense2 wrappers are stored here: /usr/lib/python3/dist-packages/pyrealsense2 when they should have been stored in /usr/lib/python3.7/dist-packages/pyrealsense2 where there is a python program to import them to /usr/local/lib.
You can manually transfer them to /usr/local/lib from /usr/lib/python3/dist-packages/pyrealsense2 using the cp copy function.