TopicPartition
Bases: NamedTuple
A topic and partition pair, naming the assignment a Subscriber is declared with.
FastStream's own rather than a re-export of aiokafka.TopicPartition, so the type is ours to grow at the same import path. Still a NamedTuple with the client library's two fields in the same order, because unpacking, indexing, ordering, hashing and equality against the client library's tuple are what the re-export gave users and none of them survive an ordinary class, or a third field. What the consumer is assigned is the client library's tuple, rebuilt where the assignment happens; this one is never handed to aiokafka.
Separate from faststream.confluent.TopicPartition, which carries offset, leader_epoch and metadata — fields the aiokafka client has no equivalent for, and so a promise this signature must not make.