打印10行杨辉三角python

以下是打印10行杨辉三角的 Python 代码：

n = 10
triangle = []

for i in range(n):
    row = [1] * (i+1)
    for j in range(1, i):
        row[j] = triangle[i-1][j-1] + triangle[i-1][j]
    triangle.append(row)

for row in triangle:
    print(" ".join(str(num) for num in row))

输出结果：

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