python输出左对齐杨辉三角

可以使用以下代码输出左对齐的杨辉三角：

def pascal_triangle(n):
    # 初始化杨辉三角的第一行
    row = [1]
    # 输出第一行
    print(row)
    # 循环输出杨辉三角的每一行
    for i in range(1, n):
        # 计算当前行
        current_row = [1]
        for j in range(1, i):
            current_row.append(row[j-1]+row[j])
        current_row.append(1)
        # 输出当前行
        print(current_row)
        # 更新上一行
        row = current_row

# 输出10行左对齐的杨辉三角
pascal_triangle(10)

输出结果如下：

[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]