Sample
importlib-metadata 9.0.0: Resolve installed package versions when distribution names differ from top-level import names without PackageNotFoundError
Verified sample for pypi importlib-metadata 9.0.0: Resolve installed package versions when distribution names differ from top-level import names without…
sha256:beb8b3121c3cddc83a0038650f092bd1609123c82e31e1209dc60f07e688d56f
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 |
2026-08-15 |
| 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
- Resolve installed package versions when distribution names differ from top-level import names without PackageNotFoundError
- Packages
- Symbols
-
- importlib_metadata.version
- importlib_metadata.PackageNotFoundError
- importlib_metadata.packages_distributions
- importlib_metadata.distribution
- Environment
- python
- Created
- 2026-08-16T06:31:23Z
Contract
- assert version() queries distribution name and raises PackageNotFoundError when given top-level import package name
- assert PackageNotFoundError inherits from ModuleNotFoundError and ImportError but not KeyError
- assert distribution name normalization under PEP 503 equates hyphens, underscores, dots, and case variants
- assert packages_distributions() maps import package names to list of distribution names
- assert passing module object or non-string to version() raises TypeError
Files
- NOTES.md
- csx.json
- requirements.txt
- src/__init__.py
- src/resolver.py
- test/contract.py