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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 seq_save(self):
 """Save the current sequence :returns: None :rtype: None :raises: None """

        if not self.cur_seq:
            return

        desc = self.seq_desc_pte.toPlainText()
        self.cur_seq.description = desc
        self.cur_seq.save()