how to pass array as argument from blueprint widget graph to python script file?

Unreal Engine Pipeline & Plugins Editor Scripting
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#1

Hello,
I have started learning ue4 and python. Before the question, I have been using “UnrealEnginePython” plugin, not ue4 official python. I have asked in the “UnrealEnginePython” teams already, since there’s no response, thats why asking here.

I want to pass an array from Blueprint to python script. I can call python script by “execute python script” node. But i dont know how to pass argument.

On the other way, i tried to get the value of an array of blueprint from python. I can get it but the value is the default value. If i change the array value in BP then call python, python wont get the changed value, it always gets the default array value. If i could get the changed value, it could have solved the problem too.

I am so sorry as it is not directly related to official ue python but any help is welcome. Thank you.

#2

You can use sys.argv to pass arguments to your scripts. It’s just as simple as separating all the items of the list with a space.

Here’s a simple snippet of code.

import sys

print(sys.argv[1:][0].split(' '))

Calling the script like this:

python path\to\script.py “a b c”

Would output:

['a', 'b', 'c']