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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 get_cached_data(datatable, **kwargs):
 """ Returns the cached object list under the appropriate key, or None if not set. """

    cache_key = '%s%s' % (CACHE_PREFIX, datatable.get_cache_key(**kwargs))
    data = cache.get(cache_key)
    log.debug("Reading data from cache at %r: %r", cache_key, data)
    return data