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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 sort_by_date_key(data_item):
 """ A sort key to for the created field of a data item. The sort by uuid makes it determinate. """

    return data_item.title + str(data_item.uuid) if data_item.is_live else str(), data_item.date_for_sorting, str(data_item.uuid)