Шаг 1 из 4+100 XP
itertools
chain, combinations, groupby — мощь стандартки.
itertools
from itertools import chain, combinations
list(chain([1,2],[3])) # [1,2,3]
list(combinations([1,2,3], 2)) # [(1,2),(1,3),(2,3)]chain, combinations, groupby — мощь стандартки.
from itertools import chain, combinations
list(chain([1,2],[3])) # [1,2,3]
list(combinations([1,2,3], 2)) # [(1,2),(1,3),(2,3)]