S = [1,2,3,4,5,6,7]

Print(s.pop(0), len())

S =[1,2,3,4,5,6,7]

Print(s[3:2], s[-5:-3])

a=[1,2,3,4]

a.append([5,6])

print(len())

Vec=[[1,2,3],[4,5,6],[7,8,9]]

[num for elem in vec for num in elem]

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

print（len())

A = [5,1,3,4]

Print(sorted(a,reverse = True))

DictColor ={"seashell":"海贝色",

"gold":"金色",

"pink":"粉红色",

"brown":"棕色",

"purple":"紫色",

"tomato":"西红柿色"}

以下选项中能输出"海贝色"的是( )