三种方法
比如 a = [[1, 2], [3, 4], [5, 6]]
- 列表推导式
[i for j in a for i in j]
- 库函数
from itertools import chain
list(chain.from_iterable(a))
sum
小技巧
sum(a, [])
三种方法
比如 a = [[1, 2], [3, 4], [5, 6]]
[i for j in a for i in j]
from itertools import chain
list(chain.from_iterable(a))
sum
小技巧sum(a, [])