python中set的各種集合關係

標籤：set   集合   

python中集合之間的並集、交集、差集等集合之間的組合，運用函數方法和簡寫方法進行筆記歸類，以便查詢

a=set("abc")b=set("abcde")print("*"*20)print("交集")print(a&b)print(a.intersection(b))print("*"*20)print("並集")print(a|b)print(a.union(b))print("*"*20)print("差集")print(a-b)print(a.difference(b))print(b-a)print(b.difference(a))print("*"*20)print("對稱差集")print(a.symmetric_difference(b))print(a^b)print(b.symmetric_difference(a))print("*"*20)print("子集判斷")print(a<b)print(a.issubset(b))print("*"*20)print("父集判斷")print(a>b)print(a.issuperset(b))

python中set的各種集合關係