Pass dynamic variable value from robot framework to python file

Question

I'm trying to pass a dynamic value from robot framework to a variable in python file (which have all my variables).

In .py file I have the following:

index = BuiltIn().get_variable_value("${iIndex}")
MyDynamicVar="xpath://div["+str(index)+"]"  #or without str

and in .robot file I have:

    FOR  ${i}  IN RANGE  ${c}
            ${iIndex} =    Set Variable    ${i+1}
            log to console   ${MyDynamicVar}
            log to console    ***************************************
    END

I tried to set an initial value in variables sections in robot file, and the value changed, but I need the value to be dynamic!

Bence Kaulics · Accepted Answer · 2021-01-31 09:26:12Z

str.format will do the trick for you, which would give the following in the variable file:

MyDynamicVar="xpath://div[{}]"

Then you can use the Extended variable syntax to call the format function on the string like:

*** Settings ***
Variables    variables.py

*** Test Cases ***
Test
    FOR  ${i}  IN RANGE  5
            ${iIndex} =    Set Variable    ${i+1}
            log to console   ${MyDynamicVar.format(${iIndex})}
            log to console    ***************************************
    END

You can even simplify to ${MyDynamicVar.format(${i+1})}. Here are the results:

==============================================================================
Test
==============================================================================
Test                                                                  xpath://div[1]
***************************************
xpath://div[2]
***************************************
xpath://div[3]
***************************************
xpath://div[4]
***************************************
xpath://div[5]
***************************************
Test                                                                  | PASS |
------------------------------------------------------------------------------

@A.Han I forgot to mention that a variable file is executed once when imported so any latter change will not take effect. That is why your approach did not update the variable. :)

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