python 列表求和，最大值，最小值，乘积

numList = [1,2,3,4,5]   
 
sum = sum(numList)  #sum = 15
maxNum = max(numList) #maxNum = 5
minNum = min(numList) #minNum = 1
from operator import mul
prod = reduce(mul, numList, 1) #prod = 120 默认值传1以防空列表报错