1. import tempfile
2. import pathlib
3. import subprocess
4. import datetime
5.  
6. import requests
7. import pylatex
8.  
9.  
10. def get_comic():
11.     print("Downloading metadata...")
12.     r = requests.get("https://xkcd.com/info.0.json")
13.     r.raise_for_status()
14.     data = r.json()
15.  
16.     print("Downloading comic...")
17.     r = requests.get(data['img'])
18.     r.raise_for_status()
19.  
20.     return r.content, data
21.  
22.  
23. def write_pdf(title, alt, num, date, tmpdir, imgfile):
24.     print("Writing PDF...")
25.  
26.     geometry_options = {
27.         "head": "40pt",
28.         "margin": "0.5in",
29.         "bottom": "0.6in",
30.         "includeheadfoot": True
31.     }
32.  
33.     doc = pylatex.Document(default_filepath=str(tmpdir / 'xkcd'),
34.                            geometry_options=geometry_options)
35.  
36.     for pkg in ['cmbright', 'caption']:
37.         doc.packages.append(pylatex.Package(pkg))
38.  
39.     doc.preamble.append(pylatex.Command('captionsetup', 'labelformat=empty'))
40.     doc.preamble.append(pylatex.Command('title', title))
41.     doc.preamble.append(pylatex.Command('author', f"https://xkcd.com/{num}/"))
42.     doc.preamble.append(pylatex.Command('date', date.strftime('%Y-%m-%d')))
43.     doc.append(pylatex.NoEscape(r'\maketitle'))
44.  
45.     doc.append(pylatex.Command('thispagestyle', 'empty'))
46.     with doc.create(pylatex.Figure(position='h!')) as img:
47.         img.add_image(str(imgfile))
48.         img.add_caption(alt)
49.  
50.     doc.generate_pdf()
51.  
52.  
53. def print_pdf(filename):
54.     print("Printing PDF...")
55.     subprocess.run(['lpr', '-P', 'HSR_HP_Color_LaserJet_M651', str(filename)])
56.  
57.  
58. def main():
59.     img, data = get_comic()
60.     with tempfile.TemporaryDirectory() as tmpdir:
61.         tmpdir = pathlib.Path(tmpdir)
62.         imgfile = tmpdir / 'xkcd.png'
63.         imgfile.write_bytes(img)
64.  
65.         date = datetime.date(year=int(data['year']),
66.                              month=int(data['month']),
67.                              day=int(data['day']))
68.  
69.         write_pdf(title=data['title'], alt=data['alt'], num=data['num'],
70.                   date=date, tmpdir=tmpdir, imgfile=imgfile)
71.  
72.         print_pdf(tmpdir / 'xkcd.pdf')
73.  
74.  
75. if __name__ == '__main__':
76.     main()
77.