Delete files and folders older than 14 days in "E:\usenet\movies\".

import os, time
target_dir = "E:\\usenet\\movies"
now = time.time()

for f in os.listdir(target_dir):
  f = os.path.join(target_dir, f)
  if os.stat(f).st_mtime < now - 14 * 86400:
    if os.path.isfile(f):
      os.remove(f)
    else:
      shutil.rmtree(f)