I am getting a error in the following line of code: context['stock_margin'] = context['top_stock'].annotate( Avg_purchase = ExpressionWrapper(F('total_puchase') / F('quantity_purchase'), output_field=FloatField()), Avg_sales = ExpressionWrapper(F('total') / F('quantity'), output_field=FloatField())) I am new to django and cant able to figure out why this is happening.. Any idea anyone how to solve this error? Continue reading...
