Error Line 11

[applebit924]

from: can't read /var/mail/platform from: can't read /var/mail/Cocoa from: can't read /var/mail/CoreFoundation from: can't read /var/mail/CoreFoundation from: can't read /var/mail/CoreFoundation from: can't read /var/mail/Foundation from: can't read /var/mail/LaunchServices from: can't read /var/mail/objc /FinderSidebarEditor.py: line 11: syntax error near unexpected token (' /FinderSidebarEditor.py: line 11: os_version = int(mac_ver()[0].split('.')[1])'

[Ajordat]

I think we could benefit from a bit more of information from your side, so that we are at least aware of your environment and we can attempt to reproduce the issue. I'm specially interested in knowing how you tried to execute it, as I don't see any syntax error in line 11.

I also suggest you to use this fork that is slightly more up-to-date and allows you to use pip to install the library.