Hi guys, So I'm having a bit of trouble with a Python script. Basically, I'd like to modify this script: https://github.com/tanrax/guetzli-recursively/blob/master/guetzli-recursively.py to include the following flag when it runs the gueztli script: Code: --quality 90 For some reason, I just can't get it right. I tried modifying line 24 to something like this, but apparently it can't just be that simple: Code: call(['guetzli', '--quality 90', url, url_out]) Any thoughts? Edit: To give some background information, I was looking for an elegant solution to recursively run the following program through a whole folder: https://github.com/google/guetzli. The script above works amazingly, except I can't seem to modify the quality settings as I'd like.