#第一步，建立字典dic_menu：dic_menu={"蔬菜":{"青菜":"绿色","胡萝卜":"橙色","茄子":"紫色","毛豆":"绿色"}, "水果":{"山竹":"紫色","香蕉":"黄色","橙子":"橙色","草莓":"红色&quo