list_1 = [1,4,5,7,3,6,7,9] list_1 = set(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)) print(list_1.issuperset(list_3)) #对称差集 print(list_1.symmetric_difference(list_2)) print("-------------") list_4 = set([5,6,7,8]) print(list_3.isdisjoint(list_4)) # Return True if two sets have a null intersection. ''' #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) list_1.add(999) list_1.update([888,777,555]) print(list_1) print(list_1.pop()) print(list_1.pop()) print(list_1.pop()) print(list_1.pop()) print( list_1.discard(888) )