尽管我可能会尝试,但我似乎不能正确地捕获sqlalchemy IntegrityError:
from sqlalchemy import exc
try:
insert_record()
except exc.IntegrityError, exc:
print exc # this is never called
handle_elegantly() # this is never called
正如人们可能预期的那样:
IntegrityError: (IntegrityError) insert or update on table "my_table"
violates foreign key constraint "my_table_some_column_fkey"
我试着明确地说:
from sqlalchemy.exc import IntegrityError
更新:
我发现了一些似乎与这里发生的情况相吻合的东西,即在会话刷新到数据库之前以及在执行try
/except
块之后才抛出完整性错误:Trying to catch integrity error with SQLAlchemy
但是,在try
块中添加session.flush()
会生成InvalidRequestError
ERROR:root: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: (IntegrityError)
https://stackoverflow.com/questions/24522290
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