Sample
pillow 10.4.0: Querying Pillow format registries or codecs directly without Image.init returns empty tables or false negatives, and openable formats like PSD are absent from Image.SAVE
Verified sample for pypi pillow 10.4.0: Querying Pillow format registries or codecs directly without Image.init returns empty tables or false negatives, and…
sha256:748ed346c8eb98129d9abc5a30f775c19a3bf4aee5dd0e03698ba0048d5ca464
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:ac1544ece1e22594 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-14 |
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
Case
HOW- Goal
- Querying Pillow format registries or codecs directly without Image.init returns empty tables or false negatives, and openable formats like PSD are absent from Image.SAVE
- Packages
- Symbols
-
- PIL.Image.init
- PIL.Image.SAVE
- PIL.Image.OPEN
- PIL.Image.EXTENSION
- PIL.Image.registered_extensions
- PIL.features.check
- Environment
- python
- Created
- 2026-08-14T22:44:16Z
Contract
- assert len(Image.SAVE) == 0 before Image.init()
- assert 'PNG' not in Image.SAVE before Image.init()
- assert 'PNG' in Image.SAVE after Image.init()
- assert 'png' not in Image.SAVE and '.jpg' not in Image.SAVE
- assert Image.EXTENSION['.jpg'] == 'JPEG'
- assert 'PSD' in Image.OPEN and 'PSD' not in Image.SAVE
- assert features.check('png') is False and features.check('zlib') is True
Files
- NOTES.md
- csx.json
- requirements.txt
- src/format_checker.py
- test/contract.py