python dict（字典） + 集合

//创建字典
x = {"吕布":"灭爸","罗彬":"逆子"}
print(type(x))

//字典应用
a = {"罗彬":{"语文":70,"数学":60,"英语":80},"富刚":{"语文":80,"数学":70,"英语":90}}
print(a)
print(a["罗彬"]["数学"])

//创建集合
特性：无序性、唯一性
d = {'a','b','c','d','e'}
print(d)//输出结果无序