吴裕雄--天生自然 PYTHON3开发学习：集合

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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