不使用循环生成行

def fibonacci(n):
    if n <= 0:
        return []
    elif n == 1:
        return [0]
    elif n == 2:
        return [0, 1]
    else:
        fibs = fibonacci(n - 1)
        fibs.append(fibs[-1] + fibs[-2])
        return fibs

# 使用示例
print(fibonacci(10))

numbers = [1, 2, 3, 4, 5]
squares = list(map(lambda x: x**2, numbers))

# 使用示例
print(squares)  # 输出: [1, 4, 9, 16, 25]

def square_generator(numbers):
    for num in numbers:
        yield num**2

# 使用示例
for square in square_generator([1, 2, 3, 4, 5]):
    print(square)  # 输出: 1 4 9 16 25

def fibonacci_iterative(n):
    if n <= 0:
        return []
    fibs = [0, 1]
    for i in range(2, n):
        fibs.append(fibs[-1] + fibs[-2])
    return fibs[:n]

# 使用示例
print(fibonacci_iterative(10))