python找出列表重复值

a = ['l', 'i', 'u', 'h', 'a', 'i', 'w', 'e', 'n']

print [val for val in list(set(a)) if a.count(val)==2]

[root@iZ94h14przhZ ~]# python python_list.py

['i']

转载自：https://www.2cto.com/kf/201512/452758.html