集合 - Qiita

>>> a={1,2,2,3,4,4,5,6} >>> a {1, 2, 3, 4, 5, 6} >>> type(a) <class'set'> >>> b={2,3,3,6,7} >>> b {2, 3, 6, 7} >>> a-b {1, 4, 5} >>> b-a {7} >>> a & b {2, 3, 6} >>> a | b {1, 2, 3, 4, 5, 6, 7} >>> a ^ b {1, 4, 5, 7} >>> s={1,2,3,4,5} >>> s {1, 2, 3, 4, 5} >>> s[0] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'set' object is not subscriptable >>> s.add(6) >>> s