A French Embassy staff member, Nazak Afshar, on trial for charges related to post-election protests in Iran, has been released from the Tehran prison where she was being held, the French presidency said in a statement on Tuesday. The statement also called for the release of a French woman, Clotilde Reiss, a teacher who was still being held on spying charges. The government spokesman, Luc Chatel, said that he saw some hope for “a rapid solution” to free Ms. Reiss, 24, who has been held since July 1.