On Tue, Jul 9, 2013 at 10:07 AM, Ethan Furman <et...@stoneleaf.us> wrote:
> You could also do it like this:
>
>     def updating(self):
>         self.transaction_active = True
>         return self

Yes, that would be simpler.  I was all set to point out why this
doesn't work, and then I noticed that the location of the
"transaction_active" attribute is not consistent in the original code.
 The DbSession class places it on self, and then the example usage
places it on the connection object (which I had based my version on).
Since that seems to be a source of confusion, it demonstrates another
reason why factoring this out is a good thing.
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