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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 incomplete(transaction):
 """ Notifies incomplete blockwise exchange. :type transaction: Transaction :param transaction: the transaction that owns the response :rtype : Transaction :return: the edited transaction """

        transaction.block_transfer = True
        transaction.response = Response()
        transaction.response.destination = transaction.request.source
        transaction.response.token = transaction.request.token
        transaction.response.code = defines.Codes.REQUEST_ENTITY_INCOMPLETE.number
        return transaction