[Zope] recipe-question

I'm using a nice small python-script from zopelabs: objects = context.objectValues() #get the objects in this folder for object in objects: print "id:", object.id property_names = object.propertyIds() # list of dictionaries of property names. for property in property_names: print property + ": " + object.getProperty(property) print print return printed The things I don't get are use of the double print statement and more importantly the need for returning printed. Why isn't print enough. Thanks.