python 打印出杨辉三角形前十行。

好的，下面是 Python 代码实现：

def generate_triangle(n):
    # 初始化第一行
    triangle = [[1]]
    for i in range(1, n):
        # 上一行
        prev_row = triangle[-1]
        # 当前行
        curr_row = [1]
        # 计算中间的数
        for j in range(1, i):
            curr_row.append(prev_row[j - 1] + prev_row[j])
        # 最后一个数
        curr_row.append(1)
        # 添加到杨辉三角
        triangle.append(curr_row)
    return triangle

# 打印前十行
for row in generate_triangle(10):
    print(row)

输出结果为：

[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]