python中求 两个set、list、dict 的合并，交集，差集

1.Set

1.1 两个set的合并

>>> a = {1,2,3}
>>> b = {3,4,5}
>>> c = a | b
>>> print(c)
{1, 2, 3, 4, 5}

1.2 两个set的交集

>>> a = {1,2,3}
>>> b = {3,4,5}
>>> c = a & b
>>> print(c)
{3}

1.3 两个set的差集

>>> a = {1,2,3}
>>> b = {3,4,5}
>>> print(a - b)
{1, 2}
>>> print(b - a)
{4, 5}

1.4 两个set的异或

>>> a = {1,2,3}
>>> b = {3,4,5}
>>> print(a ^ b)
{1, 2, 4, 5}

2. list