将多维list变为一维:
import itertools
a = [[1,2,3],[4,5,6], [7], [8,9]]
out = list(itertools.chain.from_iterable(a))
输出:
[1, 2, 3, 4, 5, 6, 7, 8, 9]
将多维list变为一维:
import itertools
a = [[1,2,3],[4,5,6], [7], [8,9]]
out = list(itertools.chain.from_iterable(a))
输出:
[1, 2, 3, 4, 5, 6, 7, 8, 9]