How to use environment variables to read pictures by natron readnode

ansqhd · April 20, 2020, 3:04pm

devernay · April 21, 2020, 8:04pm

Hi @ansqhd, and welcome to the Naton forum.
You can use a python expression to access these:

import os
print(os.environ['HOME'])

ansqhd · April 23, 2020, 3:26am

Thank you for your answer
Can’t use Python

I need expressions to solve this problem

okhostok · April 25, 2020, 4:55am

It is not Python Expression, it is TCL Expression and I doubt that TCL is supported in Natron.

ArseniyS · October 5, 2024, 1:56am

Hey, may be a little overdue, but probably would be helpful to someone else. You need to right click on file/then chose expression. New scripting window will pop up. There you can enter your pythone code. Assuming that you’re using environment variables, your code should look like that: os.environ[‘Work_Path’] + os.environ[‘EPISODE’] + ‘/’ + os.environ[‘SEQUENCE’] + ‘/’ + os.environ[‘SHOT’] + ‘/’ + os.environ[‘SHOT’] + ‘_’ + (‘%03d.3xr’)