标签：指定元素 存在 pre 列表 set 拷贝 去重 sep png
print("alex", "dabai", "liu", sep = "")
1.可变：列表，字典
2.不可变:字符串， 数字， 元组
修改了变量的值，而id号跟着改变，即不可变类型
name = ‘alex‘ print(id(name)) name = ‘sb‘ print(id(name))
1.顺序访问：字符串， 列表， 元组
2.映射：字典
3.直接访问：数字
存放元素个数：
容器类型：列表，元组， 字典
原子：数字，字符串
1.不同的元素组成
2.无序
3.集合中元素必须是不可变类型
s = {1, 2, 3, 4, 5}
s = set(‘hello‘) print(s) s1 = set(["alex", "alex", "sb"]) print(s1)
s = {1, 2, 3, 4, 5, 6}
s.add(‘alex‘)
print(s)
s.clear()
s1 = s.copy()
s = {1, 2, 3, 4, 5, 6}
v = s.pop()
print(s,v)
s = {1, 2, 3, 4, 5, 6}
s.remove(3)
print(s)
s = {1, 2, 3, 4, 5, 6}
s.discard(5)
print(s)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1.intersection(s2)
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1 & s2
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1.union(s2)
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1 | s2
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1.difference(s2)
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1 - s2
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1.symmetric_difference(s2)
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
n = s1 ^ s2
print(n)
s1 = {1, 2, 3}
s2 = {2, 3, 4, 6}
s1.difference_update(s2)
s1 = s1 - s2
print(s1)
print(s1)
s1 = {1, 2, 3}
s2 = {1, 2, 3, 4, 6}
n = s1.issubset(s2)
print(n)
s1 = {1, 2, 3}
s2 = {1, 2, 3, 4, 6}
n = s2.issuperset(s1)
print(n)
s1 = {1, 2, 3}
s2 = {1, 2, 3, 4, 6}
s1.update(s2)
print(s1)
s = frozenset("hello dabai")
print(s)
标签：指定元素 存在 pre 列表 set 拷贝 去重 sep png
原文地址：https://www.cnblogs.com/dabai123/p/10984879.html
