set

集合型基本宣言a = {1, 2, 2, 3, 4, 4, 5, 6} # 重複値がまとめられる {1, 2, 3, 4, 5, 6}b = {2, 3, 3, 6, 7} # {2, 3, 6, 7}演算a - b # {1, 4, 5}...