self.conn.commit()
The email address must belong to a user who has not received that email in the past.
，推荐阅读新收录的资料获取更多信息
‘패가망신’ 경고, 李 취임 후 10여번 써…주가-산재 등 겨냥
Что думаешь? Оцени!
block: Writes wait until buffer space is available. Use when you trust the producer to await writes properly.