def _get_node_change_list(exploration_id, property_name, new_value):
 return [{'cmd': collection_domain.CMD_EDIT_COLLECTION_NODE_PROPERTY, 'exploration_id': exploration_id, 'property_name': property_name, 'new_value': new_value}]

def _get_node_change_list ( exploration_id , property_name , new_value ) : return [ { 'cmd' : collection_domain . CMD_EDIT_COLLECTION_NODE_PROPERTY , 'exploration_id' : exploration_id , 'property_name' : property_name , 'new_value' : new_value } ]
generates a change list for a single collection node change .