Flexget+Trakt Series begin -- only for one list

#/usr/bin/python2.7
import subprocess
import json
import hashlib
import requests
###CONFIG###############################################
username='USERNAME'
password='PASSWORD'
api='API'
list_name='LIST NAME'
########################################################
#The rest you don't have to worry about
list_name=list_name.lower()
 # These characters are just stripped in the url
for char in '!@#$%^*()[]{}/=?+\\|-_':
    list_name = list_name.replace(char, '')
# These characters get replaced
list_name = list_name.replace('&', 'and')
list_name = list_name.replace(' ', '-')
auth = {'username':username,
        'password':password}
url_base='http://api.trakt.tv/'
url=url_base+'user/list.json/'+api+'/'+username+'/'+list_name
result=requests.post(url, data=json.dumps(auth))
data=result.json()
listTitles=[]
for item in data["items"]:
    if 'show' in item:
        listTitles.append(item['show']['title'])
url=url_base+'user/library/shows/watched.json/'+api+'/'+username
result=requests.post(url, data=json.dumps(auth))
data=result.json()
command_base='flexget series begin'
for item in data:
    title=item['title']
    if title in listTitles:
        season=item['seasons'][0]['season']
        episode=item['seasons'][0]['episodes'][-1]
        next_ep='S'+str(season).zfill(2)+'E'+str((episode+1)).zfill(2)
        command=command_base+' \''+title+'\' '+next_ep
        print command
        subprocess.call(command,shell=True)