Function worker

tests/test_transcript.py:139–142

(idx: int)

    n_writes = 50

    def worker(idx: int) -> None:
        with TranscriptWriter(path) as w:
            for j in range(n_writes):
                w.append({"thread": idx, "n": j})

    threads = [threading.Thread(target=worker, args=(i,)) for i in range(n_threads)]
    for t in threads: