Collection Types

Collection types represent containers that hold multiple elements of a homogeneous type. All elements in a collection must conform to the same element_type specification.

The three collection types are: - CtyList - Ordered collection that preserves element order and allows duplicates - CtySet - Unordered collection of unique elements (automatically removes duplicates) - CtyMap - Key-value mapping where keys are always strings and values are of a specified type

Collections recursively validate all their elements during validation, ensuring type safety throughout nested structures. Collections are also iterable, allowing you to use standard Python iteration patterns (for element in list_value).

See also: User Guide: Collection Types for detailed usage examples.