在python映射函数中使用reduce

我将以这种方式执行成对求和操作:

listsToReduce = [[[1,2,3], [3,2,1]], [[1,3,5], [5,3,1]]]
reducedLists = [list(map(sum, zip(*lst))) for lst in listsToReduce]
print(reducedLists)

输出

[[4, 4, 4], [6, 6, 6]]

map

[map(sum, zip(*lst)) for lst in listsToReduce]

但我强烈建议在所有新代码中使用Python 3,因为Python 2将在2020年正式停止使用。

在Python 2中还有另一种方法,但由于使用了 lambda 函数而不是 sum

from operator import add

reducedLists = map(lambda t: map(add, *t), listsToReduce)

from functools import partial, reduce
import operator

listsToReduce = [[[1,2,3], [3,2,1]],[[1,3,5],[5,3,1]]]

f = partial(reduce, lambda first, second : list(map(operator.add, first,second)))
map(f, listsToReduce)