Some images in pdf can not be removed using 'remove_images()'

[animebing]

Some images in pdf can not be removed using the method metioned here. There is only one page in the pdf and the output of 'len(page.images)' is 32, When I do 'remove_images()', they are still in the new created pdf.

Environment

Which environment were you using when you encountered the problem?

$ python -m platform
# Windows-10-10.0.22621-SP0

$ python -c "import pypdf;print(pypdf.__version__)"
# 3.15.2

Code + PDF

This is a minimal, complete example that shows the issue:

import os
import sys

from pypdf import PdfReader, PdfWriter


src_pdf_path = sys.argv[1]
dst_pdf_path = os.path.splitext(src_pdf_path)[0] + '_no_images.pdf'

reader = PdfReader(src_pdf_path)
writer = PdfWriter()

for page in reader.pages:
    writer.add_page(page)

writer.remove_images()
with open(dst_pdf_path, "wb") as f:
    writer.write(f)

2210.03142-1.pdf

[pubpub-zz]

the images are in a XObject/Form within an XObject/Form
I've modified the code to cope with such situations for all remove_xxx functions

[MartinThoma]

The bugfix by @pubpub-zz was just merged and will be released on 3rd of September in pypdf > 3.15.4

[MartinThoma]

@animebing Thank you for reporting the issue 🙏 If you want, I can add you to https://pypdf.readthedocs.io/en/latest/meta/CONTRIBUTORS.html

[animebing]

@MartinThoma Thanks for solving the problem.