Hi @lifeisapeachfest , compas_viewer is a standalone viewer which only works through a local python environment, not inside a notebook. You can still use APIs from compas_ifc without 3d visualization, but to use model.show (which uses compas_viewer in background), you will need to run your script in a local python setup. Hope this helps.
you can use compas_notebook for visualisation in notebooks. i don’t know if this is already integrated in compas_ifc, but you can always write the visualisation code explicitly.
@Li_Chen maybe notebook/scene support something to consider for compas_ifc…