Python交集有什么作用？

本文教程操作环境：windows7系统、Python 3.9.1，DELL G3电脑。

以属于A且属于B的元素为元素的集合成为A与B的交集。

1、概念

交集就是求两个集合共有的元素。

my_set1={"apple","orange","pear","banana","food"}
my_set2={"apple","orange","pear"}
both=my_set1&my_set2
print(both)

2、实例

除了通过 & 符号以外，还可以通过集合的 intersection 方法完成。

my_set1={"apple","orange","pear","banana","food"}
my_set2={"apple","orange","pear"}

both=my_set1.intersection(my_set2)
print(both)