It looks like you're new here. If you want to get involved, click one of these buttons!
I read most of the articles about this definition, but I was wondering how I can use this to return an error message like this:
if (self.w>70): #if width input is bigger than 70
#error message should be here
[here it should be "end" or "return"?]
Sorry, this is my first experience with Klayout so I'm a little bit confused.