Python打印杨辉三角

代码

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# @FileName  :杨辉三角.py
# @Time      :2020/3/8 16:45
# @Author    :anqixiang
# @Function  :

low = 6             #打印多少行，需大于2
list1 = [1]         #第一行
list2 = [1, 1]      #第二行

def trigon(alist,n):
    blist = [1]
    if n > 0:
        for j in range(len(alist)):
            if j < len(alist) - 1:
                sum = alist[j] + alist[j+1]
                blist.append(sum)
        blist.append(1)
        print(str(blist).center(50))
        n -= 1
        trigon(blist, n)

if __name__ == "__main__":
    print(str(list1).center(50))
    print(str(list2).center(50))
    trigon(list2,low - 2)
    run_code = 0

效果