How to Render a Html Page with Selenium Webdriver + PhantomJS in Python

concurrent-phantomjs-example.py

#
# 20160929 - firman.gautama@gmail.com
#

from selenium import webdriver
import time
import concurrent.futures
import signal
from concurrent.futures import ThreadPoolExecutor
from random import randint


def fetch(url, driver):
    try:
      if not driver.current_url:
        driver.refresh()
      else:
        driver.get(url)

      driver.implicitly_wait(2)
      driver.set_page_load_timeout(2)
      print 1
    except:
      print 2
      pass

    return 0

# destroy driver instance
def clean_up(driver):
  try:
    driver.service.process.send_signal(signal.SIGTERM)
    driver.quit()
  except:
    pass

  return

if __name__ == "__main__":
    num_thread = 10
    num_request = 25000
    url = "http://www.google.com/"

    # instantiate threadpool
    pool = ThreadPoolExecutor(num_thread)
    parr = []

    # instantiate PhantomJS per THread
    for x in range(0, num_thread):
      print "Initialized thread %s " % x
      parr.append(webdriver.PhantomJS())
      print " OK."

    start_time = time.time()

    # Use one random thread from thread pool to access the URL
    for x in range(0, num_request-1):
      n = randint(0, (num_thread-1))
      future = pool.submit(fetch, url, parr[n])
      future.done()

    # clean_up: make sure phantomjs process is closed
    for x in range(0, num_thread):
      future = pool.submit(clean_up, parr[x])
      future.done()

Example of multithreaded selenium webdriver with phantomjs in Python.
In this example, it will use 10 thread + 10 phantomjs to do 25000 request to "url".