如何在python中剪切pdf并创建图库？

import os
import PyPDF2
from PIL import Image

def cut_pdf_and_create_gallery(pdf_path, output_dir):
    # 创建输出目录
    os.makedirs(output_dir, exist_ok=True)

    # 打开PDF文件
    with open(pdf_path, 'rb') as file:
        reader = PyPDF2.PdfFileReader(file)
        total_pages = reader.numPages

        # 逐页提取图像
        for page_num in range(total_pages):
            page = reader.getPage(page_num)
            try:
                # 将PDF页转换为图像
                image = page.to_image(resolution=300)

                # 保存图像
                image_path = os.path.join(output_dir, f'page_{page_num + 1}.png')
                image.save(image_path, 'PNG')
                
                # 可以在这里进行一些图像处理，比如缩放、裁剪等

                print(f'Page {page_num + 1} saved as {image_path}')
            except:
                print(f'Error extracting page {page_num + 1}')

if __name__ == '__main__':
    pdf_path = 'example.pdf'  # 替换为你的PDF文件路径
    output_dir = 'gallery'  # 替换为你想要保存图像的目录路径

    cut_pdf_and_create_gallery(pdf_path, output_dir)