[Chicago] 2 unique keys in a python dict?
Massimo Di Pierro
mdipierro at cs.depaul.edu
Thu Oct 9 23:16:00 CEST 2008
I am not suggesting using a web framework. I suggested using a DB +
python based database abstraction layer (I do my examples in web2py
because that is what I know best).
Lukasz said that, in fact, he is using SQLAlchemy.
Since Garrett mentioned Django (I did not) and I am not aware of how
to use GROUP BY in Django, the conversation sidetracked.
My question still stands. How would I do a GROUP BY and a SUM of the
grouped records in using Django without multiple queries?
I would honestly like to learn that.
Do you know?
On Oct 9, 2008, at 3:59 PM, Martin Maney wrote:
> On Thu, Oct 09, 2008 at 01:45:36PM -0500, Massimo Di Pierro wrote:
>> In a more concise terms. Say I have a table "mytable" with a column a
>> (double) and b (string) and want to read data in from a csv file,
>> by b, add all a's for the same b and write the result back in CSV. In
>> web2py I do (complete code):
> I guess that's your hammer - this only made me wonder why anyone would
> use a web framework and a database for that problem. Or what if
> anything it means that this is so nearly builtin to one.
> Some kinds of waste really are disgusting. SUVs, for example,
> would arguably be gross even if they ran on a fuel which would
> never run out and generated no pollution. SUVs are gross because
> they're the solution to a gross problem. (How to make minivans
> look more masculine.) -- Paul Graham
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