如何编写斐波那契级数的python程序，并需要在金字塔中显示级数？

def fibonacci(n):
    if n <= 0:
        return []
    elif n == 1:
        return [0]
    elif n == 2:
        return [0, 1]
    else:
        fib_list = [0, 1]
        for i in range(2, n):
            fib_list.append(fib_list[i-1] + fib_list[i-2])
        return fib_list

def print_fibonacci_pyramid(n):
    fib_list = fibonacci(n)
    max_length = len(str(fib_list[-1]))
    for i in range(n):
        row = ' '.join(str(num).rjust(max_length) for num in fib_list[:i+1])
        print(row.center(max_length*n))

n = int(input("请输入斐波那契数列的级数："))
print_fibonacci_pyramid(n)

def fibonacci(n):
    if n <= 0:
        return []
    elif n == 1:
        return [0]
    elif n == 2:
        return [0, 1]
    else:
        fib_list = [0, 1]
        for i in range(2, n):
            fib_list.append(fib_list[i-1] + fib_list[i-2])
        return fib_list

def print_fibonacci_pyramid(n):
    fib_list = fibonacci(n)
    max_length = len(str(fib_list[-1]))
    for i in range(n):
        row = ' '.join(str(num).rjust(max_length) for num in fib_list[:i+1])
        print(row.center(max_length*n))

n = int(input("请输入斐波那契数列的级数："))
print_fibonacci_pyramid(n)