1 list_1 = [1, 4, 5, 7, 3, 6, 7, 9]
2 list_2 = set([2, 6, 0, 66, 22, 8])
3
4
5 """
6 集合间关系操作
7 """
8 # 把list_1转成集合
9 list_1 = set(list_1)
10
11 # 取交集
12 print(list_1.intersection(list_2))
13 print(list_1 & list_2)
14
15 # 取并集
16 print(list_1.union(list_2))
17 print(list_1 | list_1)
18
19 # 取差集 in list_1 but not in list_2
20 print(list_1.difference(list_2))
21 print(list_1 - list_2)
22 # 对称差集-取并集去掉交集
23 print(list_1.symmetric_difference(list_2))
24 print(list_1 ^ list_2)
25
26 # 判断是否是子集-subset
27 print(list_1.issubset(list_2))
28 # 判断是否是父集-upperset
29 print(list_1.issuperset(list_2))
30
31 # 交集为空返回True
32 print(list_1.isdisjoint(list_2))
33
34
35 """
36 集合增删改查
37 """
38 # 添加一项
39 list_1.add(999)
40 # 添加多项
41 list_1.update([1, 2, 3])
42
43 # 删除
44 list_1.remove(999) # 没有会报错
45 list_1.discard(999) # 没有不会报错
46 # 随机删除
47 list_1.pop()
48
49 # 查看长度
50 len(list_1)
51
52 # x in s?
53 print(1 in list_1)
