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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 exist_partitions(self, prefix_spec=None):
 """ Check if partitions with provided conditions exist. :param prefix_spec: prefix of partition :return: whether partitions exist """

        try:
            next(self.partitions.iterate_partitions(spec=prefix_spec))
        except StopIteration:
            return False
        return True