python - permutations

사용 예시

from itertools import permutations

num_list=[1,2,3]

result=permutations(num_list,2) # <itertools.permutations object at 0x0000025A944086D0>

result=list(result) # [(1, 2), (1, 3), (2, 1), (2, 3), (3, 1), (3, 2)]