Python 输出杨辉三角--生成器

生成器写法呢

# -*- coding: UTF-8 -*-
def triangles():
    i,one=1,[1]
    while i:
        yield one
        tran   = [0]+one+[0]
        lenght = len(tran)
        one    = [tran[x]+tran[x+1] for x in range(0,lenght-1)]
##验证部分
n = 0
results = []
for t in triangles():
    print(t)
    results.append(t)
    n = n + 1
    if n == 10:
        break
if results == [
    [1],
    [1, 1],
    [1, 2, 1],
    [1, 3, 3, 1],
    [1, 4, 6, 4, 1],
    [1, 5, 10, 10, 5, 1],
    [1, 6, 15, 20, 15, 6, 1],
    [1, 7, 21, 35, 35, 21, 7, 1],
    [1, 8, 28, 56, 70, 56, 28, 8, 1],
    [1, 9, 36, 84, 126, 126, 84, 36, 9, 1]
]:
    print('测试通过!')
else:
    print('测试失败!')