python 推导式

# 列表推导式
# 集合推导式
# map filter

a = [1,2,3,4,5,6,7,8]

b = [i**2 for i in a if i >=5]
print(b)


a = {1,2,3,4,5,6,7,8}

b = {i**2 for i in a if i >=6}
print(b)


# 字典
c = {
    "喜小乐":18,
    "石敢当":16,
    "王小友":17
}
d = [key for key,value in c.items()]
print(d)

e = {value:key for key,value in c.items()}
print(e)

f = (key for key,value in c.items())
for x in f:
    print(x)