I tried running this script, it creates a file descriptor in Windows 7 but if you attempt to open it you get a message that the file is locked for editing.?? Bypassing this message and forcing open the file shows the file to be empty.
Looking at the file details in Explorer shows a size of 0 kb
JMRI 4.4 running on Windows 7 64 bit SP1 fully patched.
Bob Morningstar