Invalid attachments

[gigelu]

Hello

I am trying to attach a file to the pdf and when I try to save the attached file I am getting a 0 bytes file.
The code is this:

from io import BytesIO
from weasyprint import HTML

html = HTML(string='test')
with open('/tmp/test.pdf', mode='wb') as out_file:
    html.write_pdf(out_file, attachments=[BytesIO(b'attachment')])

The relevant part in the output is:

3 0 obj
<</Filter /FlateDecode /Length 18 /Params
  <</CheckSum <44290cefe42924d04a92d99428a95f27> /Size 10>> /Type
  /EmbeddedFile>>
stream
b'x\x9cK,)IL\xce\xc8M\xcd+\x01\x00\x16\xbc\x04*'
endstream
endobj

I don't think that the stream should be a python string (b'...').
Any help in what may be the problem?

Thank you.

[dnezic]

I have the same problem, so I downgraded to version WeasyPrint==0.40, where the attachments work, at least using <a rel=attachment ... in HTML.

[gigelu]

Confirm, downgrading to 0.40 fixes the issue.

[archatas]

I can confirm that with WeasyPrint 0.42 <link rel=attachment href="path-to-some-file" /> creates empty attachments.

[liZe]

Sorry, my mistake… I've added more tests to catch this, but generating and reading the PDF file with the same library makes a perfect garbage-in-garbage-out problem.