intersection函数
相同
的元素集 , 称为a与b的交集都包含
的元素,即交集a_set.intersection(b_set...)
b_set...
: 与当前集合对比的1或多个集合
交集
# coding:utf-8
a = ['dewei', 'xiaomu', 'xiaohua', 'xiaoguo']
b = ['xiaohua', 'dewei', 'xiaoman', 'xiaolin']
c = ['xiaoguang', 'xiaobai', 'dewei', 'xiaoyuan']
a_set = set(a)
b_set = set(b)
c_set = set(c)
print(a_set, b_set, c_set)
result = a_set.intersection(b_set, c_set)
xiaotou = list(result)
print('{} 是 这个小偷'.format(xiaotou[0]))