Python列表输出杨辉三角形

可以使用以下代码实现：

def generate(numRows):
    triangle = []
    for i in range(numRows):
        row = [None for _ in range(i+1)]
        row[0], row[-1] = 1, 1
        for j in range(1, len(row)-1):
            row[j] = triangle[i-1][j-1] + triangle[i-1][j]
        triangle.append(row)
    return triangle

# 输出杨辉三角形的前6行
tri = generate(6)
for row in tri:
    print(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]