Deselecting layer using PyQGIS

Question

I can select a layer using:

lyr = QgsProject.instance().mapLayersByName( "lyr_name" )[0]
iface.setActiveLayer(lyr)

This selects and highlights the layer in the table of contents.

How can I deselect it so that it is no longer highlighted?

Answer 1

To remove the blue / grey selection on the layer in the layer tree view, you can do it with the following code :

### your code ###
lyr = QgsProject.instance().mapLayersByName( "world" )[0]
iface.setActiveLayer(lyr)
#################
get the Qgis layer tree view (QgsLayerTreeView)
lyr_tree = iface.layerTreeView()
deselect all the layers
lyr_tree.setCurrentLayer(None)
or faster with
iface.layerTreeView().setCurrentLayer(None)

---

Links :

• PyQGIS QgsLayerTreeView documentation

Answer 2

You can do deselect your selected features with the method removeSelection() :

lyr = QgsProject.instance().mapLayersByName("lyr_name")[0]
lyr.removeSelection()

You can also use mActionDeselectAll. Take a look at this code : https://gis.stackexchange.com/a/155726/197233?