def yhsj(max):

    n=0

    row = [1]

    while (n<max):

        n+=1

        yield(row)

        row = [1] + [row[k] + row[k + 1] for k in range(len(row) - 1)] + [1]



y=yhsj(3)

for i in y:

    print(i)

使用python生成器的方法