code:

#!/usr/local/bin/python2.7

#####################################
#
#   Updated script to refresh Plex library after download
#   update credit: ADS / Diaspar (diaspar8-xm at the provider named yahoo.com)
#   (original credit unknown)
#
#####################################

import urllib
import time
from xml.dom import minidom

host = 'YOURIPADDRESSHERE'
source_type = ['movie', 'show'] # Valid values: artist (for music), movie, show (for tv)
base_url = 'http://%s:32400/library/sections' % host
refresh_url = '%s/%%s/refresh' % base_url

try:
  xml_sections = minidom.parse(urllib.urlopen(base_url))
  sections = xml_sections.getElementsByTagName('Directory')
  for s in sections:
    if s.getAttribute('type') in source_type:
      url = refresh_url % s.getAttribute('key')
      x = urllib.urlopen(url)
except:
  pass

time.sleep(30)

try:
  xml_sections = minidom.parse(urllib.urlopen(base_url))
  sections = xml_sections.getElementsByTagName('Directory')
  for s in sections:
    if s.getAttribute('type') in source_type:
      url = refresh_url % s.getAttribute('key')
      x = urllib.urlopen(url)
except:
  pass

time.sleep(30)

try:
  xml_sections = minidom.parse(urllib.urlopen(base_url))
  sections = xml_sections.getElementsByTagName('Directory')
  for s in sections:
    if s.getAttribute('type') in source_type:
      url = refresh_url % s.getAttribute('key')
      x = urllib.urlopen(url)
except:
  pass