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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fetch(task_id, wait=0, cached=Conf.CACHED):
 """ Return the processed task. :param task_id: the task name or uuid :type task_id: str or uuid :param wait: the number of milliseconds to wait for a result :type wait: int :param bool cached: run this against the cache backend :return: the full task object :rtype: Task """

    if cached:
        return fetch_cached(task_id, wait)
    start = time()
    while True:
        t = Task.get_task(task_id)
        if t:
            return t
        if (time() - start) * 1000 >= wait >= 0:
            break
        sleep(0.01)