python集合set练习题

以下是Python集合set的一些练习题：
1. 创建一个新的空集

set1 = set()

2. 迭代集合

set2 = {"apple", "banana", "cherry"}
for x in set2:
  print(x)

3. 在集合中添加成员

set3 = {"apple", "banana", "cherry"}
set3.add("orange")
print(set3)

4. 从Python集合中删除成员

set4 = {"apple", "banana", "cherry"}
set4.remove("banana")
print(set4)

5. 存在则从该集合中删除该成员

set5 = {"apple", "banana", "cherry"}
set5.discard("banana")
print(set5)

6. 集合的交集

set6a = {1, 2, 3}
set6b = {2, 3, 4}
set6c = set6a.intersection(set6b)
print(set6c)

7. 集合的并集

set7a = {1, 2, 3}
set7b = {2, 3, 4}
set7c = set7a.union(set7b)
print(set7c)

8. 创建集合差异

set8a = {1, 2, 3}
set8b = {2, 3, 4}
set8c = set8a.difference(set8b)
print(set8c)

9. 检查一个集合是否是另一个集合的子集

set9a = {1, 2, 3}
set9b = {2, 3}
set9c = set9b.issubset(set9a)
print(set9c)

10. 从给定的集合中删除所有元素

set10 = {"Red", "Green", "Black", "White"}
set10.clear()
print(set10)

11. 在一个集合中查找最大值和最小值

set11 = {1, 2, 3, 4, 5}
max_value = max(set11)
min_value = min(set11)
print("Max value in set: ", max_value)
print("Min value in set: ", min_value)

12. 查找集合的长度

set12 = {1, 2, 3, 4, 5}
length = len(set12)
print("Length of set: ", length)

13. 检查给定值是否存在于集合中

set13 = {1, 2, 3, 4, 5}
value = 3
if value in set13:
    print("Value exists in set")
else:
    print("Value does not exist in set")

14. 检查两个给定的集合是否没有共同的元素

set14a = {1, 2, 3}
set14b = {4, 5, 6}
set14c = set14a.isdisjoint(set14b)
print(set14c)

15. 从第一组中删除第二组的交集

set15a = {1, 2, 3}
set15b = {2, 3, 4}
set15a.difference_update(set15b)
print(set15a)