Python中列表元素排列组合

1 # 排列
2 from itertools import product
3 l = [1, 2, 3]
4 print(list(product(l, l)))
5 print(list(product(l, repeat=4)))
6 
7 # 组合
8 from itertools import combinations
9 print(list(combinations([1,2,3,4,5], 3)))