Sample
packaging 26.3: Check whether a version satisfies a requirement specifier in Python
Verified sample for pypi packaging 26.3: Check whether a version satisfies a requirement specifier in Python. The contract ran on python 3.12 · linux…
sha256:45e2533fcb7653dca8198455b39aca51f65c0122bfe3026b03034516f955f76e
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 3.12 linux x64 python 3.12 python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-13 |
| 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 |
Case
HOW- Goal
- Check whether a version satisfies a requirement specifier in Python
- Packages
- Symbols
-
- SpecifierSet.contains
- Version
- Environment
- python 3.12
- Created
- 2026-08-13T15:47:01Z
Contract
- parse versions and specifier sets with packaging
- assert a version inside the range matches
- assert a prerelease is excluded from a plain range
- assert prereleases=True includes it
Files
- csx.json
- requirements.txt
- src/__init__.py
- src/compat.py
- test/contract.py