# 杨辉三角
x = [[1]*i for i in range(1,11)] #数组生成方式
print(x)
for i in range(2,10):
for j in range(1,i):
x[i][j] = x[i-1][j-1] + x[i-1][j]
for i in range(0,10):
for j in range(10-i):
print(" ",end=" ")
for j in range(0,i+1):
print("%3d"%x[i][j],end=‘ ‘)
print()
原文：https://www.cnblogs.com/jiaxinwei/p/11621867.html