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…ema reverse conversion - Add `validate.py`: output schema validation using jsonschema (Draft 2020-12) with SchemaValidationError providing structured error details - Add `picoschema_reverse.py`: JSON Schema to Picoschema reverse conversion supporting objects, arrays, enums, wildcards, nullable types, and descriptions - Add `jsonschema>=4.23.0` dependency to pyproject.toml - Add 22 tests for schema validation (validate_test.py) - Add 17 tests for reverse conversion including round-trip tests (picoschema_reverse_test.py) - Update DOTPROMPT_PARITY.md: fix stale Python entries - Recursive partials: 🔶 → ✅ (cycle detection already implemented) - Schema validation: 🔶 → ✅ (jsonschema added) - Schema validation errors: 🔶 → ✅ - JSON Schema → Picoschema: 🔶 → ✅ (reverse conversion added) - spec/helpers/: 🔶 → ✅ (all spec tests pass) - spec/partials.yaml: 🔶 → ✅ (all spec tests pass) - Spec Tests: 🔶 → ✅ (343+ tests) - Mark Q1 2026 Python spec test coverage as done - Update last-updated date to 2026-02-19 All 343 tests pass.
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Summary
Closes Python parity gaps in dotprompt by adding two new modules and updating the parity documentation.
Changes
New: Output Schema Validation (
validate.py)validate_output(data, schema)validates rendered output against JSON Schema usingjsonschema(Draft 2020-12)SchemaValidationErrorwith structured error details (path + message for each violation)New: JSON Schema to Picoschema Reverse Conversion (
picoschema_reverse.py)json_schema_to_picoschema(schema)converts JSON Schema back to compact Picoschema notation(*)), nullable types, descriptions, optional fieldsUpdated: DOTPROMPT_PARITY.md
Fixed stale Python entries where features were already implemented but marked as partial:
jsonschemavalidation addedSchemaValidationErrorwith structured errorspicoschema_reverse.pyaddedspec/helpers/spec/partials.yamlAlso marked Q1 2026 "Python specification test coverage" as done.
Dependency
jsonschema>=4.23.0topyproject.tomlTest Results
All existing tests continue to pass. 39 new tests added (22 validation + 17 reverse conversion).