图片转换到PDF

把一系列图片整合到PDF格式
Python代码

import os
from io import BytesIO
from PIL import Imageos.environ['NLS_LANG'] = 'SIMPLIFIED CHINESE_CHINA.UTF8'
SUPPORT_SUFFIX = ["jpg", "jpeg", "png"]def pic_to_pdf(image_bytes: bytes) -> bytes:"""将单个图片转换为单张PDF:param image_bytes: 图片的bytes对象:return: PDF的bytes对象"""# 将bytes对象转换为BytesIO对象image_bytes_io = BytesIO(image_bytes)# 从内存中读取图片image_object = Image.open(image_bytes_io)# 打开内存中的文件用于保存PDFwith BytesIO() as result_bytes_io:# 将图片保存为单张PDFimage_object.save(result_bytes_io, "PDF", resolution=100.0)# 获取内存中的文件data = result_bytes_io.getvalue()# 返回PDF的bytes对象return datadef batch_convert(image_path: str, pdf_path: str) -> None:"""批量将图片转换为单张PDF:param image_path: 图片的文件夹:param pdf_path: PDF文件保存的文件夹"""# 遍历文件夹下所有文件for root, dirs, files in os.walk(image_path, topdown=False):for name in files:# 提取文件的后缀名file_suffix = os.path.splitext(name)[-1].lstrip(".").lower()# 检测该文件格式是否受到支持if file_suffix not in SUPPORT_SUFFIX:continue# 拼接出图片文件的绝对路径source_file_path = os.path.join(root, name)# 拼接出PDF文件的绝对路径target_file_path = os.path.join(pdf_path, f"{os.path.splitext(name)[0]}.pdf")# 将图片文件转换为PDF文件with open(source_file_path, "rb") as source:with open(target_file_path, "wb") as target:target.write(pic_to_pdf(source.read()))batch_convert("", "")