Comment 3 for bug 1986429

thanks, the fix works.

The part with logging inserted should look like this:

 with open(os.path.join('/etc/pam.d', f)) as f:
     for f in os.listdir('/etc/pam.d'):
            print ("Rob says: " + f)
     content = f.read()

and yes it was also an *.swp file in my case.

Thanks for your research