launchpad-dev team mailing list archive

[Aaron Bentley <aaron@xxxxxxxxxxxxx>]

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Jeroen Vermeulen wrote:
> Aaron Bentley wrote:
> 
>> ISTM that try/finally is just syntactic sugar for try/except+raise/else,
>> and that context managers handle the latter just fine.
> 
> But to my taste not very transparently, is my point.

On the other hand, context managers can make the right way to do it also
the lazy way to do it.

One alternative to using a context manager for transactions is:

    txn = transaction.begin()
    try:
        modify_the_database()
    finally:
        # Ah, everything succeeded.
        txn.commit()

Aaron
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