Error in fundamental ratios - Invalid Operation-Division by zero

Hello I have definied some conditions about fundamental factors in order to select stock that meet these conditions. Within the FineSelectionFunction, I create the following list: 

 filtered_fine = [x for x in fine if ((x.EarningReports.BasicEPS.OneMonth - x.EarningReports.BasicEPS.ThreeMonths)/ (x.EarningReports.BasicEPS.ThreeMonths)) > 0.25
            and (x.OperationRatios.ROE.OneMonth) > 0.17 
            and ((x.FinancialStatements.IncomeStatement.TotalRevenue.OneMonth -x.FinancialStatements.IncomeStatement.TotalRevenue.ThreeMonths)/ (x.FinancialStatements.IncomeStatement.TotalRevenue.ThreeMonths)) >0.25]

When the algo start to run I have the following error: 

Runtime Error: InvalidOperation : [<class 'decimal.DivisionUndefined'>]
at FineSelectionFunction in 51
at <listcomp> in 51
InvalidOperation : [<class 'decimal.DivisionUndefined'>] (Open Stacktrace)

I write with try and except to handle the error but the error continue. Sth know how to fix this?

Thanks for the help


Update Backtest

Hi Nicolas, not every fundamental factor has values for multiple periods. When you use the fundamental factor value, please add a check to make sure their values are not zero. 

filtered_fine = [x for x in fine if x.EarningReports.BasicEPS.OneMonth != 0
and x.EarningReports.BasicEPS.ThreeMonths != 0
and ((x.EarningReports.BasicEPS.OneMonth - x.EarningReports.BasicEPS.ThreeMonths)/ (x.EarningReports.BasicEPS.ThreeMonths)) > 0.25

You can check if the value of a fundamental factor for the specified period is available via the research notebook

# add a few symbols and retrieve the factor value without specifying the period
qb.GetFundamental(["AAPL","AIG","BAC","GOOG","IBM"], "EarningReports.BasicEPS")

For example the output "3M:0.035714;  6M:0.075714;   9M:0.055714;  12M:0.083571" means EarningReports.BasicEPS data are available for ThreeMonths, SixMonths, NineMonths and TwelveMonths.


Hello Jing Wu, thanks for your response. Now is working!!

Best Regards,



Update Backtest


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