Installer yamale avec Homebrew, Nix, apt

Liens du projet

• Page d'accueil
• Docs amont
• Page du gestionnaire de paquets

Commandes et alias

• yamale

Historique du projet

23andMe published the Yamale repository in January 2014. The README describes it simply as a schema and validator for YAML, with both CLI and Python API entry points. Its schema format keeps schemas as YAML documents whose leaves are validator expressions such as `str()`, `int()`, includes, recursion, strict-mode controls, and custom validators.

The PyPI history shows public releases beginning in June 2014 and continued maintenance into the 6.x series. Over time the README added Python 3-only requirements, optional ruamel.yaml parsing for YAML 1.2 support, multiprocessing CLI validation, strict-mode controls, and a warning that schemas should come from trusted sources because the schema language is executable enough to be treated as a trust boundary.

Historique d'adoption

Yamale adoption is mostly practical: teams with YAML configuration, data files, or repository conventions can add a schema file and run a CLI check in tests or continuous integration. It is attractive when a project wants a readable schema next to YAML data without converting the validation problem to JSON Schema.

Modes d'utilisation

From the command line, Yamale searches a target path for YAML files and looks nearby or upward for a schema file unless one is specified. From Python, callers build schema and data objects with `yamale.make_schema` and `yamale.make_data`, then call `yamale.validate` and handle validation errors.

Yamale is best suited to project-owned schemas: configuration contracts, fixtures, data drops, and repository policy checks. Its own README cautions against accepting malicious schema definitions from untrusted sources.

Pourquoi les passionnés de paquets s'y intéressent

For package nerds, Yamale is a tidy example of a domain-specific validator that stayed deliberately smaller than JSON Schema. It shows up as both a CLI package and a Python import, useful for making YAML-heavy projects less ambiguous without buying into a larger schema ecosystem.

Chronologie

• 2014-01: The public GitHub repository was created under 23andMe.
• 2014-06: PyPI records the earliest available Yamale release uploads.
• 2020s: The README documents Python 3.8+, optional ruamel.yaml parsing, CLI multiprocessing, includes, recursion, and strict-mode behavior.
• 2025: PyPI records the 6.x release line.

Related projects

• Yamale sits near JSON Schema validators, PyKwalify, Cerberus-style Python validators, and YAML linters, but it keeps its own compact schema expression syntax rather than adopting JSON Schema as the schema language.

Sources

• https://api.github.com/repos/23andMe/Yamale
• https://github.com/23andMe/Yamale#readme
• https://pypi.org/pypi/yamale/json