python中如何去除列表中重復元素？

方法一：

         用內置函數set:

    

list1 = [1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9]
list2 = list(set(list1))
print(list2)

 

方法二：

      遍歷去除重復

list1 = [1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9]
list2=[]
for i in list1:
    if not i in list2:
        list2.append(i)
print(list2)

 列表推導式

list1 = [1, 2, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9]
list2=[]
[list2.append(i) for i in list1 if not i in list2]