On Friday, August 10, 2018 at 2:43:51 PM UTC-4, Mike Bayer wrote:
>
> You need to copy the keyedtuples into some other data structure, like a 
> dictionary, modify it, then send that data back into updates.   Your best 
> bet is to use the bulk update stuff once you have those dictionaries, see 
> http://docs.sqlalchemy.org/en/latest/orm/session_api.html?highlight=bulk#sqlalchemy.orm.session.Session.bulk_update_mappings
>  
> .
>

A quick background on Mike's short answer... Tuples are immutable lists in 
Python, and "KeyedTuple" should indicate that you can't change the values. 
They're just a handy result storage object, not an ORM object mapped to a 
table row.

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