> We are still "using transactions", just with more precise, more explicit*,
> and more flexible* semantics, represented by a context manager.
>
> Rolling back a transaction is possible by raising a Rollback exception
> within a block.
>
> I hope this answers your question but if not please describe the scenario
> you are thinking about.
Personally, I think the autocommit=False approach is somewhat
safer (more conservative) for the data:
One *always* is inside a transaction, and the default
behaviour is to rollback.
Nothing is by accident automatically committed -- which can
happen with autocommit=True.
I would certainly suggest that a context manager calls
.rollback() during teardown rather than .commit() -- the
context manager cannot know whether actions really are to
be committed, even if technically possible.
Karsten
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