What is YAML?

YAML Ain’t Markup Language (YAML) is often called a data serialization language. It was intended to be human-readable and organize data into a structured format. Programming languages can understand the content of YAML files (which usually have a .ymlor.yamlextension) and map them to built-in data types. For example, when you consume a .yaml file in yourPythonscript, it will automatically convert the content into either a dictionary {}or list [], so you can work and iterate over it.

YAML rules help to construct a readable file so it's important to understand them in order to write a valid and well formatted YAML file.

YAML file formatting

There're a few rules to follow while developing YAML files. YAML uses indentation (like Python), which builds the relationship of items with one another:

1. So, the first rule when writing a YAML file is to make your indentation consistent, using either whitespace or tabs, and don't mix them.
2. The second rule is to use a colon : when creating a dictionary...