CodeSampleX

Sample

verify pkg:pypi/anyio@4.14.2

sha256:4320d2bbc538885493309eeb0f18e6474605ed03b33ec4fb3da8bd6abef20a35

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment python linux 24 · ubuntu · glibc 2.39 x64 python python pip

Verification-run environments

Environment Contract Stages Run
python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · python@1
2026-08-20

Case

HOW
Goal
verify pkg:pypi/anyio@4.14.2
Packages
Symbols
  • anyio.to_thread.run_sync
  • anyio.CapacityLimiter
  • anyio.move_on_after
  • anyio.fail_after
Environment
python
Created
2026-08-20T02:13:47Z

Contract

  1. anyio.to_thread.run_sync executes blocking synchronous functions in worker threads and returns results asynchronously
  2. anyio.CapacityLimiter restricts maximum concurrent worker threads executed via to_thread.run_sync
  3. anyio.move_on_after creates a cancellation scope that cancels execution after timeout without raising an error
  4. anyio.fail_after creates a cancellation scope that raises TimeoutError when deadline is exceeded

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous