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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 delete_security_group(self, sec_grp):
        '''
        Deletes the specified security group
        '''
        sec_grp_id = self._find_security_group_id(sec_grp)
        ret = self.network_conn.delete_security_group(sec_grp_id)
        return ret if ret else True