Sample
greenlet 3.0.3: Observe the implicit parent greenlet control return behavior when a switched-to greenlet completes
Verified sample for pypi greenlet 3.0.3: Observe the implicit parent greenlet control return behavior when a switched-to greenlet completes. The contract ran…
sha256:bdf2e2f5b210f6ce304b4c4a450f53972eceeab15ddf990f5cea4c215abe7355
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 |
2026-08-17 |
| 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
- Observe the implicit parent greenlet control return behavior when a switched-to greenlet completes
- Packages
- Symbols
-
- greenlet.greenlet
- greenlet.switch
- Environment
- python
- Created
- 2026-08-17T17:46:23Z
Contract
- When greenlet B switches to greenlet C, and C finishes its execution, control returns to C's parent (its creator), rather than back to B that performed the switch
- f1 starts and switches to f2 using g2.switch()
- f2 completes and control implicitly returns to main, not f1, leaving f1 suspended forever
- result contains 'main end' but never receives 'f1 end'
Files
- NOTES.md
- csx.json
- requirements.txt
- test_contract.py