from selenium import webdriver
import time
import random

url = raw_input('Input your website:').strip()
num = int(raw_input('How much times do you want:'),10)
options = webdriver.FirefoxOptions()
options.add_argument('--headless')
browser = webdriver.Firefox(firefox_options=options)
browser.get(url)
print 'Please wait...'
for i in range(num):
  i += 1
  print 'Refresh +%d' %i
  time.sleep(random.randint(1,3))
  browser.refresh()
browser.quit()
print 'Good Bye!'

# coding=utf-8
import time
from selenium import webdriver
 
driver = webdriver.Chrome()
driver.maximize_window()
driver.implicitly_wait(6)
 
driver.get("https://www.baidu.com")
time.sleep(2)
try:
  driver.refresh() # 刷新方法 refresh
  print ('test pass: refresh successful')
except Exception as e:
  print ("Exception found", format(e))
driver.quit()