PickObjectLayer.py

output = []

adoc = Application.DocumentManager.MdiActiveDocument
ed = adoc.Editor
with adoc.LockDocument():
	with adoc.Database as db:
		with db.TransactionManager.StartTransaction() as t:
			bt = t.GetObject(db.BlockTableId, OpenMode.ForWrite)
			btr = t.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite)
			for objectid in btr:
				obj1 = t.GetObject(objectid, OpenMode.ForRead)
				if obj1.Layer == "Layer1":
						output.append(obj1)
				else:
					pass
OUT = output