Colander¶ Colander is useful as a system for validating and deserializing data obtained via XML, JSON, an HTML form post or any other equally simple data serialization. It is tested on Python 2.7, 3.5, 3.6, 3.7, 3.8, 3.9, and 3.10, and PyPy 2.7 and PyPy 3.8. Colander can be used to: Define a data schema. Deserialize a data structure composed of strings, mappings, and lists into an arbitrary Python