python中列表元素的去重复
1、方法1
>>> test1 = ["aa","bb","aa","cc","aa","cc","dd","xx","bb"]
>>> test1
[‘aa‘, ‘bb‘, ‘aa‘, ‘cc‘, ‘aa‘, ‘cc‘, ‘dd‘, ‘xx‘, ‘bb‘]
>>> test2 = []
>>> for i in test1:
if i not in test2:
test2.append(i)
>>> test2
[‘aa‘, ‘bb‘, ‘cc‘, ‘dd‘, ‘xx‘]
2、方法2
>>> test1
[‘aa‘, ‘bb‘, ‘aa‘, ‘cc‘, ‘aa‘, ‘cc‘, ‘dd‘, ‘xx‘, ‘bb‘]
>>> list(set(test1))
[‘cc‘, ‘bb‘, ‘aa‘, ‘xx‘, ‘dd‘]
原文：https://www.cnblogs.com/liujiaxin2018/p/14715696.html