Sample
markupsafe 3.0.3: Pin MarkupSafe byte escaping semantics, format_map dynamic mapping auto-escaping, subclass type preservation across string operations, and __radd__ coercion.
Verified sample for pypi markupsafe 3.0.3: Pin MarkupSafe byte escaping semantics, format_map dynamic mapping auto-escaping, subclass type preservation…
sha256:7f582cabdd480d1750a50f39dbad6a382681185b4bfaa4e9528393f75c2ff245
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
- Pin MarkupSafe byte escaping semantics, format_map dynamic mapping auto-escaping, subclass type preservation across string operations, and __radd__ coercion.
- Packages
- Symbols
-
- Markup
- escape
- EscapeFormatter
- Environment
- python
- Created
- 2026-08-17T19:51:17Z
Contract
- escape() converts bytes objects via str() to their literal repr 'b\'...\'' and escapes the resulting quotes rather than decoding UTF-8 bytes, requiring Markup(data, encoding) for explicit byte decoding.
- Markup.format_map() queries Mapping instances dynamically without requiring keyword unpacking, auto-escaping plain string values while preserving Markup instances.
- Markup subclasses preserve their custom subtype across escape classmethods, binary additions, partitions, splits, and case transformations.
- Markup.__radd__ auto-escapes left-hand plain string operands during concatenation, whereas str.join returns an unescaped plain str.
- Markup.replace matches search targets literally against the internal escaped representation and auto-escapes plain string replacement arguments.
Files
- NOTES.md
- csx.json
- requirements.txt
- src/__init__.py
- src/template_engine.py
- test/contract.py