PyYAML

PyYAML is the essential YAML parser and emitter for the Python programming language.

PyYAML delivers a full-featured YAML framework for Python, supporting a complete YAML 1.1 specification and robust Unicode. It handles everything from complex configuration files (e.g., Ansible) to object serialization across platforms. Crucially, always use `yaml.safe_load()`: the default `yaml.load()` function is powerful, allowing arbitrary Python object construction, which poses a significant security risk with untrusted data. The latest stable version is 6.0.3 (as of late 2025), and the project operates under the permissive MIT License.

https://pyyaml.org