Passing a robot variable by reference to a python function

[François I]

Hi, I use my own python function in Robot Framework. I give 3 parameters, these parameters are Robot Framework variables. When I modify the variables in my function, they are not modified in Robot Framework. So I deduce the variables are passed by value and not by reference... Is there a way to pass the variable by reference ? Or else to return the 3 variables as a result ?

Here is an example of Robot Framework code :

** Settings ***
 Library    OperatingSystem
 Library    myLib.MyLib    WITH NAME    MyLib
 
 Suite TearDown  teardown
 ** Variables **
 ${var}  azerty
 
 ** Test Cases **
 My test case
         log     ${var}
         myFunction    ${var}
         log     ${var}

With my python library :

import sys
 
 class MyLib(object):
     def __init__(self):
         return
 
     def myFunction(self,var):
         var="another value"

But as I said, the variable var remains "azerty" when I log it, and I would like the second log to print "another value" (as the function should change the value)

Thank for your help !

[Pekka Klärck]

You are not modifying the value but resetting a variable. In fact you even cannot modify strin

Sent from my mobile.

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[Pekka Klärck]

Ooopps, sent accidentally, sorry. Was just saying that you cannot even modify strings in Python. If you would pass a mutable object, like a list, changes done by the lib would be seen also on Robot side.

Sent from my mobile.

[Kevin O.]

If you are interested in returning multiple variables, check out the user guide. There's an example of returning multiple values.

http://robotframework.org/robotframework/latest/RobotFrameworkUserGuide.html#returning-values

Kevin