Light locker settings won't start even after bug 1559735 implementation

[Umar]

I recently installed xubuntu 16.04 and i am a beginner in linux. I noticed when i press the Light Locker settings, the application doesn't start. Since I am new to this, I tried to search if there were any solution to the problem, but even after implementing the changes (from bug155935) there is something wrong in the code and i can't figure it out. Thats why i thought opening a bug is probably a good idea.

This is the piece from my light-locker-settings.py file (path: /usr/share/light-locker-settings/light-locker-settings/ ). This file is also attached to this bug.

def check_running_process(self, process_name):
        """Return True if the specified process is active."""
        # Find the process...
        # for pid in psutil_get_pids():
 for pid in psutill.pids():
            try:
                p = psutil.Process(pid)
                if self.get_process_username(p) == username:
                    # Return True if the process is found.
                    if self.get_process_name(p) == process_name:
                       return True
            except
                pass

 return False

when i type in terminal
$ light-locker-settings

I get this error
File "/usr/share/light-locker-settings/light-locker-settings/light-locker-settings.py", line 226
    return True
SyntaxError: 'return' outside function

 I thought after implementing the changes from bug 1559735 this application would start working.

Please Help.