【Python】集合set

s &＃61; {1, 2, 3, 4}
x &＃61; {1, 1, 1, 1}
len(s)print(x in s)
print(x not in s)print(x.isdisjoint(s))
print(x.issubset(s))
print(x.issuperset(s))print(x <&＃61; s)
print(x print(x & s)
print(x - s)
print(x ^ s)


# 创建
t &＃61; [1,2,3]
s &＃61; set(t)set() # 空集合只能用函数,{}表示空字典"""
添加:set.add(),set.update()
"""
s.add(0)
s.update({40, 60})"""
删除:set.pop(),set.remove(),set.discard()
"""
s.remove() # 不安全
s.discard() # 安全
s.pop() # 弹出一个min(s)
max(s)
len(s)
sum(s)
 记忆图