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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 load_cache():
 """ Load cache from the disk. Return: set: Deserialized data from disk. """

    if not os.path.exists(settings.DUP_FILTER_FILE):
        return set()

    with open(settings.DUP_FILTER_FILE) as f:
        return set(
            json.loads(f.read())
        )