CodeSampleX

Sample

anyio 4.13.0: verify CancelScope

Verified sample for pypi anyio 4.13.0: verify CancelScope. The contract ran on python 3.12 · linux alpine/x64 · docker and passed: CancelScope context…

sha256:8a3f292b274208fa458a26d54851fb1e7ee10f7a616bf666ec21e3a24287d997

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
1
Signing keys that built it
1
Declared environment python 3.12 linux 24 · ubuntu · glibc 2.39 x64 python 3.12 python pip 24

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		 2026-08-20

Case

HOW
Goal
verify pkg:pypi/anyio@4.13.0 CancelScope
Packages
Symbols
  • anyio.CancelScope
Environment
python 3.12
Created
2026-08-20T10:34:05Z

Contract

  1. CancelScope context manager allows scoping cancellation for async execution
  2. cancel method triggers cancellation causing subsequent async operations to abort
  3. cancelled_caught property indicates whether a cancellation exception was caught
  4. deadline property triggers automatic cancellation when current time reaches deadline
  5. shield property protects code block from cancellation triggered by outer scopes

Files

  • PROMPT.md
  • csx.json
  • pyproject.toml
  • requirements.txt
  • spec.json
  • src/__init__.py
  • src/sample.py
  • test/contract.py

Download the source artifact (tar.gz)

Origin Seeder

anonymous