Python 3.6和通过变量将值插入MariaDB

Question

代码说明-运行程序以向maria db表添加值。程序执行并提示变量无误，但查询时该表未显示任何行。知道我要去哪里错了吗？想要使其动态化，所以我正在为数据库和表使用变量。      ########输出#########

var songs=[{name:'Smooth',artist:'Santana featuring Rob Thomas',year:1999,month:10,day:23,weeksAtNumberOne:12,duration:'4:00',},{name:'What a Girl Wants',artist:'Christina Aguilera',year:2000,month:6,day:15,weeksAtNumberOne:2,duration:'3:20',},{name:'I Knew I Loved You',artist:'Savage Garden',year:2000,month:8,day:29,weeksAtNumberOne:4,duration:'4:10',},{name:'Thank God I Found You',artist:'Mariah Carey featuring Joe and 98 Degrees',year:2000,month:2,day:19,weeksAtNumberOne:2,duration:'4:17',},{name:'Amazed',artist:'Lonestar',year:2000,month:7,day:4,weeksAtNumberOne:2,duration:'4:00',}]

function summerCount(arr) {
  return arr.reduce(function(init, next) {
    if ([6, 7, 8].includes(next.month)) {
      init.push(next.month);
    };
    return init;
  }, []).length;
}
console.log(summerCount(songs));