SequenceField(self, /, *args, **kwargs)

A SequenceField represents a sequence of things. This class just adds a method onto Field: :func:sequence_length. It exists so that SequenceLabelField, IndexField and other similar Fields can have a single type to require, with a consistent API, whether they are pointing to words in a TextField, items in a ListField, or something else.


SequenceField.sequence_length(self) -> int

How many elements are there in this sequence?