Takes a file as input and executes 'flexget --seen' on each line. Useful if you're just starting to use flexget and don't want to redownload a large number of files you've already seen.

flexget_seen_list.py

#!/usr/bin/python

import fileinput
import subprocess

for line in fileinput.input():
    print line
    args = ['/usr/local/bin/flexget', '--seen', line]
    subprocess.call(args)