Python3递归函数实现遍历多维列表

listv = [1,2,3,[4,6,7,8,[10,21,22]]]

def findEven(src,dest):

    for item in src:

        if isinstance(item, list):

            #当前元素为列表，继续调用

            findEven(item, dest)

        elif item%2==0:#求余

            dest.append(item)

listv = [1,2,3,[4,6,7,8,[10,21,22]]]

dest = []

findEven(listv, dest)

print(dest)

[2, 4, 6, 8, 10, 22]