YAML
Yaml is a syntax for specifying structured data. In this way, it is an alternative to:
- JSON
- XML
It’s main advantage is that it is far more compact that either JSON or XML. That makes it easier to read for humans; less extraneous syntax in the way.
It’s main drawback is that, like Python, it relies on whitespace and indentation to indicate hierarchy, which can be tedious to get right and/or debug.