Catherine Devlin wrote:
>
> When populating objects through the ORM, I'd like to interpret all
> NULL values fetched from VARCHAR2 / NVARCHAR2 columns in the database
> as empty strings ('') instead of `None`s.
>
> Is there any way to set that behavior globally?  Failing that, how
> would you recommend doing it?


use a TypeDecorator that creates that behavior.  To get a "global" effect,
perhaps in your imports make sure that your custom type overrides the
usage of String/Unicode in your Table definitions.


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