Sample
tomli 2.4.1: Read TOML across Python versions where stdlib tomllib is absent (<3.11) versus present (>=3.11) without tripping on binary-only load, str-only loads, positional parameters, and missing dump methods
Verified sample for pypi tomli 2.4.1: Read TOML across Python versions where stdlib tomllib is absent (<3.11) versus present (>=3.11) without tripping on…
sha256:988e141ecb3ebbb05e25053dbe7fb6837e24e1d5e3c9bc92ccb0e5f92d8629b1
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 |
2026-08-15 |
| 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
- Read TOML across Python versions where stdlib tomllib is absent (<3.11) versus present (>=3.11) without tripping on binary-only load, str-only loads, positional parameters, and missing dump methods
- Packages
- Symbols
-
- tomli.load
- tomli.loads
- tomli.TOMLDecodeError
- Environment
- python
- Created
- 2026-08-15T10:56:55Z
Contract
- assert tomllib exists in stdlib on python >= 3.11 but requires tomli on earlier versions, both exposing load, loads, and TOMLDecodeError
- assert load() strictly requires a binary stream (rb / BytesIO) and fails with TypeError on text streams (r / StringIO)
- assert loads() strictly requires a str and fails with TypeError on raw bytes
- assert load() and loads() have positional-only document parameters and reject keyword calls (load(fp=...), loads(s=...))
- assert neither tomli nor tomllib provides dump() or dumps() serialization functions, raising AttributeError
- assert TOMLDecodeError inherits from ValueError rather than a library-specific hierarchy root
- assert parse_float customization preserves arbitrary precision using Decimal without converting to float first
- assert date, naive datetime, aware UTC datetime, and local time are decoded into their distinct python datetime types
Files
- NOTES.md
- csx.json
- requirements.txt
- src/__init__.py
- src/compat.py
- src/loader.py
- test/contract.py