I would like to be able to filter a query set based on a calculated date
value.  Googling did not bring up anything obvious.

As close as I can express it in "pseudo syntax", I'd like to do something
along these lines:

import datetime
from dateutil.relativedelta import *
today = datetime.now()
MyModel.objects.filter( (my_date_field + relativedelta(months =
+my_month_field))__lt = today )

i.e. compare one date with another - the second is calculated using a date
field and a second numeric field (value representing months).

The above syntax does not work - I am not sure how to code the calculation
part...

Thanks
Derek

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