CodeSampleX

Sample

detect current async library using sniffio.current_async_library

sha256:fda310039fb80462bcb58c3a8123650ff593da741600e0f4daad31c80a596747

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 · alpine · musl x64 python 3.12 python pip 24

Verification-run environments

Environment Contract Stages Run
python 3.12 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · python@1python:3.12-alpine@sha256:d09d15e60962…
2026-08-23

Case

HOW
Goal
detect current async library using sniffio.current_async_library
Packages
Symbols
  • sniffio.AsyncLibraryNotFoundError
  • sniffio.current_async_library
Environment
python 3.12
Created
2026-08-23T18:22:47Z

Contract

  1. assert current_async_library raises AsyncLibraryNotFoundError when called outside async context
  2. assert current_async_library returns asyncio when called inside asyncio.run coroutine
  3. assert current_async_library returns the name set via current_async_library_cvar
  4. assert AsyncLibraryNotFoundError is a subclass of RuntimeError

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous