How to use the diskcache.Deque function in diskcache

def test(status=False):
    if os.environ.get('TRAVIS') == 'true':
        return

    if os.environ.get('APPVEYOR') == 'True':
        return

    random.seed(SEED)
    deque = dc.Deque(range(SIZE))
    processes = []

    for count in range(8):
        process = mp.Process(target=stress, args=(SEED + count, deque))
        process.start()
        processes.append(process)

    for value in it.count():
        time.sleep(1)

        if status:
            print('\r', value, 's', len(deque), 'items', ' ' * 20, end='')

        if all(not process.is_alive() for process in processes):
            break

def test_init():
    directory = '/tmp/diskcache/deque'
    sequence = list('abcde')
    deque = dc.Deque(sequence, None)

    assert deque == sequence

    rmdir(deque.directory)
    del deque

    rmdir(directory)
    deque = dc.Deque(sequence, directory)

    assert deque.directory == directory
    assert deque == sequence

    other = dc.Deque(directory=directory)

    assert other == deque

def test_init():
    directory = '/tmp/diskcache/deque'
    sequence = list('abcde')
    deque = dc.Deque(sequence, None)

    assert deque == sequence

    rmdir(deque.directory)
    del deque

    rmdir(directory)
    deque = dc.Deque(sequence, directory)

    assert deque.directory == directory
    assert deque == sequence

    other = dc.Deque(directory=directory)

    assert other == deque

    del deque
    del other
    rmdir(directory)

directory = '/tmp/diskcache/deque'
    sequence = list('abcde')
    deque = dc.Deque(sequence, None)

    assert deque == sequence

    rmdir(deque.directory)
    del deque

    rmdir(directory)
    deque = dc.Deque(sequence, directory)

    assert deque.directory == directory
    assert deque == sequence

    other = dc.Deque(directory=directory)

    assert other == deque

    del deque
    del other
    rmdir(directory)

def deque():
    deque = dc.Deque()
    yield deque
    rmdir(deque.directory)

def test_repr():
    directory = '/tmp/diskcache/deque'
    deque = dc.Deque(directory=directory)
    assert repr(deque) == 'Deque(directory=%r)' % directory