Dear Maintainer,

the version of pdfposter included in Debian trixie seems to be incompatible
with the default Python 3.13 version

steps to reproduce the issue

- download a sample PDF
  $ curl -O https://www.debian.org/releases/trixie/release-notes.en.pdf

- try to convert the first page to two A4 sheets
  $ pdfposter -f 1 -l 1 -p 2x1a4 release-notes.en.pdf sample_a3.pdf

- it fails with
  ...
  File "/usr/share/pdfposter/pdftools/pdfposter/__init__.py", line 257, in
_scale_pdf_page
    content = ContentStream(page["/Contents"].get_object(), None)
  File "/usr/lib/python3/dist-packages/pypdf/generic/_data_structures.py", line
1198, in __init__
    stream_data = stream.get_data()
  File "/usr/lib/python3/dist-packages/pypdf/generic/_data_structures.py", line
1418, in get_data
    new_data.write(operator)
    ~~~~~~~~~~~~~~^^^^^^^^^^
TypeError: a bytes-like object is required, not 'str'

- the PKG-INFO syas the max supported Python version is 3.10
  $ pkginfo --json /usr/share/pdfposter/pdftools.pdfposter-0.8.1.egg-info/ \
    | jq '.classifiers | map(select(startswith("Programming Language")))'

- following pdfposter changelog support of Python 3.11 was added with version
0.9
https://pdfposter.readthedocs.io/en/stable/Changes.html
  0.9 (2025-07-22)
  Add support for Python 3.11, 3.12 and 3.13. Drop support for Python 3.6.

Please consider to amend the package to make it usable in Debian trixie.

kind regards
Frank

I've checked that this issue is fixed in the version currently in
testing (0.9.1-2), which works with both python 3.13 and 3.14 and
updated the metadata.

I haven't however triaged the issue under stable, nor started work on
seeing whether making a stable update for it is feasible (yet? I'm not
sure I'll have time to do it, sorry).