This will work
data = Articles.objects.all().annotate(result=ExpressionWrapper(F('cost_buy') * F('quantity') , output_field=FloatField()))
now data is a queryset. so you can do something like this
data[0].result
data.values("result")
-- data = Articles.objects.all().annotate(result=ExpressionWrapper(F('cost_buy') * F('quantity') , output_field=FloatField()))
now data is a queryset. so you can do something like this
data[0].result
data.values("result")
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