Loading all raster layers in folder using PyQGIS

Question

I would like to load all raster layers with type .xyz which are in a folder into my QGIS Project using PyQGIS and wrote the following function

    for lyr in glob.glob(os.path.join(inputDir, "* .xyz")):
        rasterlyr = QgsRasterLayer(lyr , "")
        QgsProject.instance().addMapLayers(rasterlyr) 

I'm getting the following error message:

QgsProject.addMapLayers(): argument 1 has unexpected type 'QgsRasterLayer'

But according to the Dokumentation "Cheat Sheet" this should actually work.

Does anyone see the mistake?

Answer 1

You used QgsProject.instance().addMapLayers(rasterlyr) with a s while you are giving a single raster layer. You need to use the singular version or to give a list of layers (even with a single layer in the list).

Either do

QgsProject.instance().addMapLayer(rasterlyr) 

or

QgsProject.instance().addMapLayers([rasterlyr]) 

My preference is the first one.