python输出杨辉三角

# !/usr/bin/env python
# -*- coding:utf-8 -*-
# Author:Hiuhung Wan

yanghui = []

for i in range(1, 11):
    if i == 1:
        list0 = [1]
    elif i == 2:
        list0 = [1, 1]
    else:
        list0 = [1] * i
        for j in range(1, i - 1):
            list0[j] = yanghui[-1][j - 1] + yanghui[-1][j]
    yanghui.append(list0)

for i in yanghui:
    print(i)
    
‘‘‘
[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]
‘‘‘