# -*- coding: utf-8 -*-
#!/usr/bin/env python
def triangle():
L = [1]
while True:
yield L
L = [sum(i) for i in zip([0]+L, L+[0])]
赞?
小白表示木有看懂昂，[0]+L, L+[0]，这个是啥啊
利用左右补0，错位相加求和等于所得结果
[1 a b c d 1 ] ---> [ 0 1 a b c d 1 ] <sup>T</sup>
[ 1 a b c d 1 0 ] <sup>T</sup>
生成新序列 [ 1 1+a a+b b+c c+d d+1 1 ] <sup>T</sup>
嗷嗷，非常谢谢你的解答
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和白闪闪宇宙无敌第一好
# -*- coding: utf-8 -*-
#!/usr/bin/env python
def triangle():
L = [1]
while True:
yield L
L = [sum(i) for i in zip([0]+L, L+[0])]