# coding=utf-8 from itertools import permutations from itertools import combinations from itertools import product from itertools import combinations_with_replacement a = [] b = [] c = [] d = [] items= [1,2,3,4] #순열 for i in list(permutations(items, 2)): a.append(i) print(a) #중복 순열 for i in list(product(items, repeat=2)): c.append(i) print(c) #조합 for i in list(combinations(items, 2)): b.append(i..