day03_02 集合操作

Posted 2021-06-06 flytoyou

# Author:Adminone

list_1 = [1,4,5,7,3,6,7,9]
list_1 = set(list_1)    #列表转集合
print(list_1,type(list_1))

list_2 =set([2,6,0,66,22,8,4])
print(list_1,list_2)



#交集
print(  list_1.intersection(list_2) )

#并集
print(list_1.union(list_2))

#差集 in list_1 but not in list_2
print(list_1.difference(list_2))
print(list_2.difference(list_1))

#子集
list_3 = set([1,3,7])
print(list_3.issubset(list_1))
#父集
print(list_1.issuperset(list_3))

#对称差集（排除交集）
print(list_1.symmetric_difference(list_2))
print("-------------\\n")

\'\'\'
list_4 = set([5,6,7,8])
print(list_3.isdisjoint(list_4)) #没有交集返回真.

#交集
print(list_1 & list_2)
#union
print(list_2 | list_1)

#difference
print(list_1 - list_2) # in list 1 but not in list 2

#对称差集
print(list_1 ^ list_2)
\'\'\'

#位置无序
list_1.add(999)
list_1.update([888,777,555])
print(list_1)

#随机删除
print(list_1.pop())
print(list_1.pop())
print(list_1.pop())
print(list_1.pop())

#指定删除
print(  list_1 )
list_1.discard(888)
print(  list_1 )