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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 getPolicyValue(self):
 """Get the policy and value vectors."""

        self._cur.execute("SELECT action FROM policy")
        r = self._cur.fetchall()
        policy = [x[0] for x in r]
        self._cur.execute("SELECT value FROM V")
        r = self._cur.fetchall()
        value = [x[0] for x in r]
        return policy, value