fpdf库把一组图片转换为PDF

1. import os
   
2. import natsort
   
3. from fpdf import FPDF
   
4. 
   
5. page_format = 'letter'
   
6. page_width_in_mm = 215.9
   
7. page_height_in_mm = 279.4
   
8. image_width_in_pixel = 2500
   
9. image_height_in_pixel = 3300
   
10. 
    
11. directory_name_list = os.listdir('INPUT')
    
12. 
    
13. for directory_name in directory_name_list:
    
14.     pdf = FPDF(orientation='P', unit='mm', format=page_format)
    
15.     pdf.set_auto_page_break(0)
    
16.     imagelist = [i for i in os.listdir('INPUT/' + directory_name) if i.endswith('jpg')]
    
17. 
    
18.     for image in natsort.natsorted(imagelist):
    
19.         width, height = float(image_width_in_pixel * 0.264583), float(image_height_in_pixel * 0.264583)
    
20. 
    
21.         # given we are working with A4 format size
    
22.         pdf_size = {'P': {'w': page_width_in_mm, 'h': page_height_in_mm},
    
23.                     'L': {'w': page_height_in_mm, 'h': page_width_in_mm}}
    
24. 
    
25.         # get page orientation from image size
    
26.         orientation = 'P' if width < height else 'L'
    
27. 
    
28.         #  make sure image size is not greater than the pdf format size
    
29.         width = width if width < pdf_size[orientation]['w'] else pdf_size[orientation]['w']
    
30.         height = height if height < pdf_size[orientation]['h'] else pdf_size[orientation]['h']
    
31.         pdf.add_page(orientation=orientation)
    
32. 
    
33.         pdf.set_left_margin(0.38)
    
34.         pdf.set_right_margin(0.38)
    
35. 
    
36.         pdf.image('INPUT/' + directory_name + '/' + image, 0, 0, width, height)
    
37. 
    
38.     pdf.output("OUTPUT/" + directory_name + ".pdf", "F")
    
39.     print(directory_name + ".pdf Ready")

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慢慢研究这些代码