Top-level API

missing

Singleton value that indicates that a field’s value is missing from input dict passed to Schema.load. If the field’s value is not required, its default value is used.

Constants for unknown

See also

Handling unknown fields

EXCLUDE

Indicates that fields that are not explicitly declared on a schema should be excluded from the deserialized result.

INCLUDE

Indicates that fields that are not explicitly declared on a schema should be included from the deserialized result.

RAISE

Indicates that fields that are not explicitly declared on a schema should result in an error.