How to set active 'Scene Collection'?
bpy.context.view_layer.active_layer_collection = bpy.data.collections['Master Collection'] not working.
You can loop trough all your [first level] collections and set the one you want with it's name
collections = bpy.context.view_layer.layer_collection.children for collection in collections: if collection.name == "name_of_the_collection_you_want_active": bpy.context.view_layer.active_layer_collection = collection
If you want to loop in all collections looking for "My Collection" and set it active you can use this code Change active collection from johnzero7 :
#Recursivly transverse layer_collection for a particular name def recurLayerCollection(layerColl, collName): found = None if (layerColl.name == collName): return layerColl for layer in layerColl.children: found = recurLayerCollection(layer, collName) if found: return found #Change the Active LayerCollection to 'My Collection' layer_collection = bpy.context.view_layer.layer_collection layerColl = recurLayerCollection(layer_collection, 'My Collection') bpy.context.view_layer.active_layer_collection = layerColl