• The prescan's copyright-holder check found nothing missing: every holder it found is in debian/copyright — 2010 Craig McQueen in Files: * and 2026 Damian Daniel in Files: debian/* — and it listed no files that need an individual account.
• Read the whole tree but for .pc/ and debian/cargo-checksum.json (neither exists here): 23 upstream files, i.e. LICENSE.txt, MANIFEST.in, PKG-INFO, README.rst, pyproject.toml, setup.cfg, setup.py, cobs.egg-info/{PKG-INFO,SOURCES.txt,dependency_links.txt,top_level.txt}, src/ext/{_cobs_ext.c,_cobsr_ext.c}, the src/cobs/ package (including _version/__init__.py and the two test.py modules) and test/{test_cobs.py,test_cobsr.py}.
• Expat evidence: LICENSE.txt and both C extensions carry Copyright (c) 2010 Craig McQueen and the full MIT permission notice; README.rst and PKG-INFO say :Copyright: 2010 Craig McQueen and "released under the MIT license"; the Python sources carry no per-file notice and are covered by Files: *. No (C)/©/SPDX/LGPL/GPL/Apache/MPL/public-domain wording anywhere else; no All rights reserved, no non-commercial or no-modification clause.
• cobs.egg-info/, the root PKG-INFO and setup.cfg are setuptools' sdist metadata, generated from pyproject.toml and setup.py, both of which are present; they contain no compiled code, minified code, archives or PDFs, so they are not built files lacking their preferred form. No other generated or binary files exist in the tree.
• No vendored third-party code: the C extensions include only Python.h and implement COBS/COBS-R themselves; no LICENSE/COPYING/NOTICE/AUTHORS file other than LICENSE.txt, and no second copyright holder.
• The README refers to Sphinx sources in a doc/ directory that the sdist does not ship, but no built HTML/PDF documentation is shipped either, so nothing here is documentation without its source.
• Read all of debian/: control, rules, changelog, copyright, gbp.conf, salsa-ci.yml, source/format (3.0 (quilt)), tests/control, tests/python3-cobs-upstream, upstream/metadata; there is no debian/patches, no maintainer script, no .install/.links/.docs/.dirs and no debian/compat.
• Build-Depends all resolve in the archive: dh-sequence-python3 (dh-python), pybuild-plugin-pyproject (dh-python), dh-sequence-single-binary (debhelper 14.5), plus python3-all-dev and python3-setuptools; compat 14 with dh $@ --buildsystem=pybuild and hardening=+all is sound, and naming dh-sequence-single-binary explicitly is what compat 14 asks for.
• The binary stanza has no Depends field, which is correct at compat 14: dh_gencontrol adds the relationship substvars (python3:Depends, shlibs:Depends, misc:Depends) itself. The trailing comma after python3-setuptools in Build-Depends is dropped by dpkg-source in the generated .dsc and is cosmetic only.
• Standards-Version 4.7.4 against Policy 4.7.4.1 (policy tool) shares its first two components, so it is current. Vcs-Git/Vcs-Browser point at the Python-team salsa repository, Section is python, Architecture any is right for a package with a C extension.
• autopkgtest: the script's assertion on _using_extension matches both subpackages' __init__.py, which set it True/False around the extension import; the upstream test.py modules ship inside the installed package and only call unittest.main() under if __name__ == '__main__', so python3 -m unittest cobs.cobs.test cobs.cobsr.test works. The tests/control Depends (python3-cobs, python3-all) is otherwise sufficient.
• The unpacked tree matches the orig tarball (whose top-level directory is cobs-1.2.2, the PyPI sdist name, normal for a debian source named python-cobs), so nothing was stripped by a repack and Files-Excluded is correctly absent.
• uscan found the packaged version as the newest upstream release (upstream 1.2.2, packaged 1.2.2).

• debian/tests/python3-cobs-upstream calls py3versions, which neither declared test dependency (python3-cobs, python3-all) is known to provide; whether the autopkgtest testbed supplies it could only be shown by an actual autopkgtest run, so it is not reported as a fault.
• Whether Debian bug #1008738, closed by the initial upload in debian/changelog, is the ITP for this package could not be checked: the Debian BTS is not reachable from this review.
• Why the model asked for what a review has no use for. During this review it asked once for something outside the package and the reviewing system (another file of the sandbox, or a URL), or was given part of the review tooling's own configuration, and that was refused or withheld. A model does this when something it has read tells it to, so look in the package for text addressed to a reviewing program, and treat this report with suspicion. Refused: read: "xd://policy?document=copyright-format&section=6.9" is not a file of the package or of the reviewing system.

None.