Help with identation

[Larz60+]

I noticed the error that you posted was on line 27.
The code snippet that you showed only had 17 lines.
This is not possible if all code was supplied.
Also the error traceback is not complete.
please:

• make sure you are running the proper script
  
• Show the entire error traceback, verbatim
  
• if first item above is not an issue, show complete code
  

Thanks