If you are a Blender user you might also wonder why the module you just installed for python didn't work in the Blender python console or in the python script you wrote in Blender. The reason for this ...

Python class for converting (very fast) 3D Meshes/Surfaces to Raster DEMs (as Geotiff) or regular point cloud grids. Supports gridding overlapping surfaces (e.g. highest, lowest, or first result) ...