Scraping contents of multi web pages of a website using BeautifulSoup and Selenium

Question

The website I want to scrap is :

http://www.mouthshut.com/mobile-operators/Reliance-Jio-reviews-925812061

I want to get the last page number of the above the link for proceeding, which is 499 while taking the screenshot.

My code :

   from bs4 import BeautifulSoup 
   from urllib.request import urlopen as uReq
   from selenium import webdriver;import time
   from selenium.webdriver.common.by import By
   from selenium.webdriver.support.ui import WebDriverWait
   from selenium.webdriver.support import expected_conditions as EC
   from selenium.webdriver.common.desired_capabilities import         DesiredCapabilities

   firefox_capabilities = DesiredCapabilities.FIREFOX
   firefox_capabilities['marionette'] = True
   firefox_capabilities['binary'] = '/etc/firefox'

   driver = webdriver.Firefox(capabilities=firefox_capabilities)
   url = "http://www.mouthshut.com/mobile-operators/Reliance-Jio-reviews-925812061"

   driver.get(url)
   wait = WebDriverWait(driver, 10)
   soup=BeautifulSoup(driver.page_source,"lxml")
   containers = soup.findAll("ul",{"class":"pages table"})
   containers[0] = soup.findAll("li")
   li_len = len(containers[0])
   for item in soup.find("ul",{"class":"pages table"}) : 
   li_text = item.select("li")[li_len].text
   print("li_text : {}\n".format(li_text))
   driver.quit()

I need help to figure out the error in my code for getting the last page number. Also, I would be grateful if someone give the alternate solution for the same and suggest ways to achieve my intention.