Sample
pydantic 2.13.4: Exclude or include fields across nested collections in Pydantic model serialization using '__all__' rather than bare field names
Verified sample for pypi pydantic 2.13.4: Exclude or include fields across nested collections in Pydantic model serialization using '__all__' rather than…
sha256:be1293698e1116d9918fa867565f81413664583834ba6c5f54bd1d226f885e5b
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
python linux x64 python python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-17 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- Goal
- Exclude or include fields across nested collections in Pydantic model serialization using '__all__' rather than bare field names
- Packages
- Symbols
-
- pydantic.BaseModel.model_dump
- pydantic.BaseModel.model_dump_json
- Environment
- python
- Created
- 2026-08-17T06:46:46Z
Contract
- Passing a bare field set like {'members': {'secret'}} to model_dump(exclude=...) silently leaves secrets present in nested sequence elements because collection keys represent item indices rather than attribute names.
- Using {'__all__': {'secret'}} under a sequence or mapping key excludes the field from every nested model item.
- Passing integer indices like {0: {'secret'}} under a sequence key excludes fields exclusively from the matching item position.
- Passing bare field names to model_dump(include=...) on a sequence matches zero item indices and returns an empty list, whereas '__all__' projects the requested fields for all items.
- Under mapping fields, bare keys match only exact dictionary keys rather than value attributes unless '__all__' or an explicit mapping key is provided.
Files
- NOTES.md
- csx.json
- requirements.lock
- requirements.txt
- src/__init__.py
- src/models.py
- test/contract.py