fix: type the example.py camera node as Device

[forest-savage1234]

Use Device for the camera node in example.py

Cites #43 for the named camera line. Does not close it. The rest of the generic-ObservableObject work stays open.

Repo rules (casework/CASE-Mapping-Python): no CONTRIBUTING, no PR template. Open against main. CI is .github/workflows/ci.yml. Boxes match commands actually run on this box after PATCH.diff.

• pre-commit run --all-files
• poetry run mypy case_mapping example.py tests
• poetry run pytest --doctest-modules
• poetry run python example.py

Do not drop Bundle. Do not reopen UCO #363.

Summary

example.py still types the Nikon camera as a bare ObservableObject. Alex's comment on #43 says that line should be uco.observable.Device().

Device did not exist on main (only DeviceFacet). This adds class Device(ObservableObject) next to File — same four lines, @type uco-observable:Device — and changes that one constructor.

Validation

Shallow clone of casework/CASE-Mapping-Python main @ ea0ee6645ba10135e3c4232e79fb8bbb5e34f50c (2026-07-20 5:36am AKDT). Separate apply on a clean worktree /workspace/checkouts/CASE-Mapping-Python-43 (branch forest/mappy-43-example-device, not pushed). PATCH.diff applied (patch -p1). poetry install from the lock file, then the four CI commands. Identity for any later commit: Forest Savage forestsavage03@gmail.com. Nothing posted. Ran on Python 3.13.5 / Poetry 2.4.1 (CI matrix is 3.10 and 3.14; those were not on this box).

$ pre-commit run --all-files
check json...............................................................Passed
pretty format json.......................................................Passed
black....................................................................Passed
flake8...................................................................Passed
isort (python)...........................................................Passed

Exit 0.

$ poetry run mypy case_mapping example.py tests
Success: no issues found in 20 source files

Exit 0.

$ poetry run pytest --doctest-modules
============================= test session starts ==============================
platform linux -- Python 3.13.5, pytest-9.0.3, pluggy-1.6.0
rootdir: /workspace/checkouts/CASE-Mapping-Python-43
configfile: pyproject.toml
collected 4 items

case_mapping/base.py .                                                   [ 25%]
tests/test_duplicate.py ..                                               [ 75%]
tests/test_version.py .                                                  [100%]

============================== 4 passed in 0.08s ===============================

Exit 0.

$ poetry run python example.py

Exit 0. Wrote 80834 bytes to stdout.

Device()["@type"] is uco-observable:Device. example.py L57 is device_camera = uco.observable.Device(). L590 device_phone_object = uco.observable.ObservableObject() is unchanged. class Bundle remains at case_mapping/uco/core.py:65.

Files

1. case_mapping/uco/observable.py (Device, same shape as File)
2. example.py (device_camera = uco.observable.Device())

Out of scope

• Mapping-Python Should ContentDataFacet warn on encountering image/jpg for observable:mimeType? #50 (image/jpg warning)
• Mapping-Python uco-core:Bundle should not to be used #18 (Graph / Bundle)
• Rewriting every other ObservableObject() in example.py (including device_phone_object)
• A general ontology-to-Python class generator
• Dropping or rewriting Bundle
• UCO #363

How to review

Device()["@type"] is uco-observable:Device. git grep -n device_camera example.py shows one constructor change. The other ObservableObject() calls are unchanged.

Volunteer stand-down

I am a volunteer. If you wanted the generator instead of this one node, or if Device should wait until more of example.py is retyped, I will stand down.

I am a volunteer. Thank you for the time. I am trying to become more useful on this work, so I welcome a critical look. If this is the wrong cut, or you want me to stand down, say so and I will recut from notes.

This does not close #43. If Device on that camera line is wrong, I will stand down.

[forest-savage1234]

Thank you for the time on this review. This adds Device and types the example.py camera node as that class. If that is the wrong cut, say so and I will recut from notes.