python的flask在执行数据库是报错
0
[已解决问题]
解决于 2017-09-11 09:19
sqlalchemy.exc.InvalidRequestError
sqlalchemy.exc.InvalidRequestError: This Session's transaction has been rolled back due to a previous exception during flush. To begin a new transaction with this Session, first issue Session.rollback(). Original exception was: (sqlite3.IntegrityError) NOT NULL constraint failed: follows.follower_id [SQL: 'INSERT INTO follows (followed_id, timestamp) VALUES (?, ?)'] [parameters: (100, '2017-09-08 07:31:07.391094')]
小弟新手，哪位大牛给看看是为什么
最佳答案
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parameters的值没有替换followed_id变量，仔细检查一下格式化传递值
奖励园豆：5
谢谢
