ObjectRename_2.py

def renameCollection_2():
	categoryColl = bpy.context.collection
	categoryName = categoryColl.name
	pivotObject = None
	shadowCatcherObject = None
	prefix = "Prefix_"
	if (checkCollectionNaming(categoryColl.name) == True):
		# Set naming for collection 
		for childColl in categoryColl.children:
			objectName = None
			for object in childColl.all_objects:
				if ("Item" in object.name):
					objectName = object.name
			if objectName != None:
				childColl.name = prefix + objectName
		# Get pivot and shadow catcher and update their naming
		for c in categoryColl.all_objects:
			if ("Pivot" in c.name):
				pivotObject = c
			if ("ShadowCatcher" in c.name):
				shadowCatcherObject = c
		# Set pivot object naming
		if (pivotObject != None):
			pivotObject.name = "Pivot_" + categoryName
		# Set shadow catcher object naming
		if (shadowCatcherObject != None):
			shadowCatcherObject.name = "ShadowCatcher_" + categoryName

def checkCollectionNaming(collectionName):
	if (collectionName == "Props"):
		return False
	if (collectionName == "Environment"):
		return False
	if (collectionName == "Placeholder"):
		return False
	if (collectionName == "Setup"):
		return False
	else:
		return True