有关于python排列的问题

import itertools

# 生成[1, 2, 3]的所有排列
permutations = itertools.permutations([1, 2, 3])

for permutation in permutations:
    print(permutation)

def generate_permutations(elements):
    if len(elements) <= 1:
        yield elements
    else:
        for perm in generate_permutations(elements[1:]):
            for i in range(len(elements)):
                yield perm[:i] + elements[0:1] + perm[i:]

# 生成[1, 2, 3]的所有排列
permutations = generate_permutations([1, 2, 3])

for permutation in permutations:
    print(permutation)