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I trying to return three field values in same If Statment and conecate them, but i Get NULL value insted of the conecated fields 

 getClass (!InDiameter! , !OutDiameter! , !TheridDiameter!, !FREQUENCY! )
     if FREQUENCY== 1:
        return In
     if FREQUENCY== 2:
        return(In &"-"& Out)

     if FREQUENCY == 3:
        return(In &"-"& Out &"-"&Therid)

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1 Answer 1

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getClass (In , Out , Therid, freq )
     if FREQUENCY== 1:
        return str(In)
     elif FREQUENCY== 2:
        return (str(In) + "-" + str(Out) )
     elif FREQUENCY == 3:
        return (str(In) +"-" + str(Out) + "-" + str(Therid) )
     else:
        return "other frequency"

here is a quick fix. Concantenation in Python uses "+", and I converted your fields to string str() just to make sure they are not numeric (otherwise not necessary)

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  • In the input parameters, you need to define frequency the same as in the rest of the code; FREQUENCY (or change in the code to freq).
    – Martin
    Mar 20, 2014 at 9:24
  • it's work but i get zero's (3.0 insted of 3) because i put str for double value
    – mahmoud hageer
    Mar 20, 2014 at 9:48
  • 1
    you can use str(int(In)) in place of str(In)
    – radouxju
    Mar 20, 2014 at 10:14

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