请问怎么找出a和b的不同元素

a = [1,2,3,4]
b = [3,4,5,6]

请问怎么找出a和b的不同元素

转为集合，先交集，后差集

>>> a = set([1,2,3,4])
>>> b = set([3,4,5,6])
>>> c = a & b
>>> print(c)
{3, 4}
>>> a1 = a - c
>>> print(a1)
{1, 2}
>>> b1 = b - c
>>> print(b1)
{5, 6}
>>>

python 基础系列篇：一、基本语法与基础数据类型_文盲老顾的博客-CSDN博客 万丈高楼平地起，一砖一瓦皆根基 https://blog.csdn.net/superwfei/article/details/129636941?spm=1001.2014.3001.5502

看下集合运算

a = [1,2,3,4]
b = [3,4,5,6]

print(set(a) ^ set(b))
{1, 2, 5, 6}