pip install Pillow

pip show pillow

from PIL import Image as pilImage
import os


# 簡(jiǎn)易版——圖片轉(zhuǎn)換為pdf，pdf頁(yè)面隨圖片大小浮動(dòng)
def convert_images_to_pdf(image_file):
    os.chdir(image_file)
    images = []
    file_lis = os.listdir(image_file)
    output_path = 'output.pdf'
    con = 0
    for image_path in file_lis:
        if image_path.endswith(('.jpg', '.png')):
            image = pilImage.open(image_path)
            images.append(image.convert("RGB"))
            con += 1
            print(image_path + '：第%d張' % con)
    images[0].save(output_path, save_all=True, append_images=images[1:])
    print('轉(zhuǎn)換完成，共計(jì)%d張圖片' % len(images))


if __name__ == "__main__":
    image_file = input(r'輸入目標(biāo)圖片所在文件夾路徑(如E:\test):')
    convert_images_to_pdf(image_file)

from PIL import Image as pilImage
from reportlab.platypus import SimpleDocTemplate, Image, PageBreak
from reportlab.lib.pagesizes import A4, landscape
import os


# 獲取目標(biāo)文件下圖片文件
def get_Images(image_file):
    images = []
    file_lis = os.listdir(image_file)
    for image_path in file_lis:
        if image_path.endswith(('jpg', 'png')):
            images.append(image_path)
    return images, image_file


# 常用版——圖片轉(zhuǎn)換為pdf，限制pdf頁(yè)面大小為A4
def convert_images_to_pdfp(images, image_file):
    os.chdir(image_file)

    # 獲取A4尺寸
    a4_w, a4_h = landscape(A4)

    # 創(chuàng)建一個(gè)PDF文檔
    pdf_doc = SimpleDocTemplate(r'tmp.pdf')

    if len(images) == 0:
        print('該文件夾路徑下無(wú)圖片，請(qǐng)檢查圖片格式！')
    elif len(images) == 1:
        # 獲取圖片尺寸
        img = pilImage.open(images[0])
        img_w, img_h = img.size
        # 設(shè)置合適的縮放比率
        ratio = min(a4_w / img_w, a4_h / img_h)
        # 創(chuàng)建文檔
        page = Image(images[0], img_w * ratio, img_h * ratio)
        pdf_doc.build([ page ])
        print(images[0] + '——轉(zhuǎn)換完成')
    else:
        frames = []  # 用于存儲(chǔ)多張圖片框架
        con = 0
        for image in images:
            # 獲取圖片尺寸
            img = pilImage.open(image)
            img_w, img_h = img.size
            # 設(shè)置合適的縮放比率
            ratio = min(a4_w / img_w, a4_h / img_h)
            # 儲(chǔ)存文檔內(nèi)容
            page = Image(image, img_w * ratio, img_h * ratio)
            frames.append(page)  # 將文檔內(nèi)容添加到列表中
            frames.append(PageBreak())  # 在每張圖片后添加PageBreak
            con += 1
            print(image + '——第%d張' % con)

        pdf_doc.build(frames)
        print('轉(zhuǎn)換完成，共計(jì)%d張' % len(images))


if __name__ == "__main__":
    image_file = input(r'輸入目標(biāo)圖片所在文件夾路徑(如E:\test):')
    images = get_Images(image_file)
    convert_images_to_pdfp(images[0], images[1])