python实现排列组合

# from itertools import combinations,permutations
#
#
# # 排列
# test_data = {'1', '2', '3'}
#
# print('排列有：')
# for i,j,k in permutations(test_data, 3):
#     print(i,j,k)
#
#
# # 组合
# print('组合有：')
# for i,j,k in combinations(test_data, 3):
#     print(i,j,k)