Python去除列表中的重复元素:三种方法
1.使用set去除重复元素
list1 = [1, 2, 5, 6, 7, 4, 8, 2, 7, 9, 4, 6, 3] list2 = list(set(list1)) print(list2)
[1, 2, 3, 4, 5, 6, 7, 8, 9]
2.for循环语句
list1 = [1, 2, 5, 6, 7, 4, 8, 2, 7, 9, 4, 6, 3] list2 = [] for i in list1: if not i in list2: list2.append(i) print(list2)
[1, 2, 5, 6, 7, 4, 8, 9, 3]
3.用列表推导式
list1 = [1, 2, 5, 6, 7, 4, 8, 2, 7, 9, 4, 6, 3] list2 = [] [list2.append(i) for i in list1 if not i in list2] # append别忘记添加参数 print(list2)
[1, 2, 5, 6, 7, 4, 8, 9, 3]
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