Sample
Format Python code with Ruff according to quote normalization, magic trailing comma preservation, docstring formatting, and non-destructive check/diff semantics
sha256:57c5f326f611dcaf1596df482fc9b8f8bd6707e798fd387c256d754209c466de
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
- Format Python code with Ruff according to quote normalization, magic trailing comma preservation, docstring formatting, and non-destructive check/diff semantics HOW
- Packages
-
ruff 0.15.22
- Environment
- python
- Created
- 2026-08-17T13:19:22Z
Contract
- Ruff format normalizes string literals to double quotes by default while respecting configured quote styles and avoiding unneeded escape sequences
- assert multi-line collections with trailing commas retain multi-line formatting unless skip-magic-trailing-comma is enabled
- assert docstring embedded Python code blocks are formatted only when docstring-code-format is enabled
- assert CLI --check and --diff return exit code 1 on unformatted files without modifying disk contents while standard format writes in-place
- assert CLI --range formats exclusively within the specified line interval and preserves unformatted lines outside
- assert streaming unformatted code via stdin with - and --stdin-filename emits formatted code to stdout with exit code 0
Files
- NOTES.md
- csx.json
- requirements.txt
- src/__init__.py
- src/formatter.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