两个list集合对象去重

以下是两个List集合对象去重的方法：

1.使用Set集合去重

list1 = [1, 2, 3, 4, 5]
list2 = [4, 5, 6, 7, 8]
set1 = set(list1)
set2 = set(list2)
result = list(set1.union(set2))
print(result) # 输出：[1, 2, 3, 4, 5, 6, 7, 8]

2.使用列表推导式去重

list1 = [1, 2, 3, 4, 5]
list2 = [4, 5, 6, 7, 8]
result = list(set([i for i in list1] + [j for j in list2]))
print(result) # 输出：[1, 2, 3, 4, 5, 6, 7, 8]

3.使用循环去重

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