human
I wrote the below code

    import threading
    def count_reads(rparser):
        for _ in rparser:
            pass
    n_threads = 4
    threads = []
    rparser = ReadParser(utils.get_test_data('100-reads.fq.gz'))
    for _ in range(n_threads):
        thr = threading.Thread(target=count_reads, args=[rparser])
        threads.append(thr)
        thr.start()
    for thr in threads:
        thr.join()
    assert (rparser.num_reads == 100)

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

@pytest.mark.multithread
def test_num_reads_threads():