Sample
six.int2byte raises struct.error rather than ValueError on out-of-range integers, six.remove_move raises AttributeError instead of KeyError on missing moves, and six exception helpers strictly enforce BaseException types
sha256:732e90a7812bb3832d77220772ca4ecf7f54a382435cf353ca3d72124d26705a
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- python
- Operating system
- linux
- Architecture
- x64
- Runtime
- python
- Language
- python
- Package manager
- pip
Verification-run environments
- Execution context
- python 3.12
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- python 3.12
- Language
- python
- Package manager
- pip
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17
Case
- Goal
- six.int2byte raises struct.error rather than ValueError on out-of-range integers, six.remove_move raises AttributeError instead of KeyError on missing moves, and six exception helpers strictly enforce BaseException types HOW
- Packages
-
six 1.17.0
- Environment
- python
- Created
- 2026-08-17T06:55:15Z
Commonly assumed
six.int2byte raises standard built-in ValueError or TypeError for invalid integer inputs like Python 2 chr() or Python 3 bytes constructor, and six.remove_move raises KeyError for nonexistent moves
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- six.int2byte raises struct.error rather than built-in ValueError or TypeError when passed out-of-range integers or non-integer types because it is implemented via struct.Struct.pack in Python 3
- six.byte2int raises IndexError on empty byte strings and TypeError on non-subscriptable types via operator.itemgetter
- six.indexbytes raises IndexError on out-of-bounds indices and TypeError on non-subscriptables
- six.raise_from raises TypeError when cause or target does not derive from BaseException, while setting __cause__ to None and __suppress_context__ to True when cause is None
- six.reraise raises TypeError when given an invalid traceback object or when instantiating an uncallable type
- six.remove_move raises AttributeError rather than KeyError when attempting to delete an unregistered move
- six.ensure_binary, six.ensure_text, and six.ensure_str raise TypeError with exact message formatting when passed unsupported object types
Files
- NOTES.md
- csx.json
- requirements.txt
- test/__init__.py
- test/contract.py
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- python 3.12 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · python@1 · 2026-08-17 · ed25519:d91480838ac982c9