Python的集合类型之set和frozenset详解

x = {"apple", "banana", "cherry"}
y = {"google", "runoob", "facebook"}
z = x.isdisjoint(y)
print(z)

x = {"a", "b", "c"}
y = {"f", "e", "d", "c", "b", "a"}
z = x.issubset(y) 

x = {"f", "e", "d", "c", "b", "a"}
y = {"a", "b", "c"}
z = x.issuperset(y) 
print(z)

x = {"apple", "banana", "cherry"}
y = {"google", "runoob", "apple"}
z = x.union(y) 
print(z)

x = {"apple", "banana", "cherry"}
y = {"google", "runoob", "apple"}
z = x.intersection(y) 
print(z)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x.difference(y) 
print(z)

x = {"apple", "banana", "cherry"}
y = {"google", "runoob", "apple"}
z = x.symmetric_difference(y) 
print(z)

sites = {"Google", "Runoob", "Taobao"}
x = sites.copy()
print(x)

x = {"apple", "banana", "cherry"}
y = {"google", "runoob", "apple"}
x.update(y) 
print(x)

x = {"apple", "banana", "cherry"}  # y 集合不包含 banana 和 cherry，被移除 
y = {"google", "runoob", "apple"}
x.intersection_update(y) 
print(x)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
x.difference_update(y) 
print(x)

x = {"apple", "banana", "cherry"}
y = {"google", "runoob", "apple"}
x.symmetric_difference_update(y) 
print(x)

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

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

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

fruits = {"apple", "banana", "cherry"}
fruits.pop() 
print(fruits)

fruits = {"apple", "banana", "cherry"}
fruits.clear()
print(fruits)

s_1024 = {"佩奇","老男孩","海峰","马JJ","老村长","黑姑娘","Alex"}
s_pornhub = {"Alex","Egon","Rain","马JJ","Nick","Jack"}
print(s_1024 & s_pornhub)  # 交集, elements in both set
print(s_1024 | s_pornhub)  # 并集 or 合集
print(s_1024 - s_pornhub)  # 差集 , only in 1024
print(s_pornhub - s_1024)  # 差集,  only in pornhub
print(s_1024 ^ s_pornhub)  # 对称差集, 把脚踩2只船的人T出去