selenium 调用方法

#coding:utf-8
from selenium import webdriver

url = "http://demo.testfire.net"
chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument('--headless')
chrome_options.add_argument('--disable-gpu')
driver = webdriver.Chrome(chrome_options=chrome_options,executable_path='/Users/xxxx/driver/chromedriver')

driver.get('http://demo.testfire.net')
driver.find_element_by_xpath('//*[@id="_ctl0__ctl0_LoginLink"]').click()
driver.find_element_by_xpath('//*[@id="uid"]').clear()
driver.find_element_by_xpath('//*[@id="uid"]').send_keys('admin')
driver.find_element_by_xpath('//*[@id="passw"]').send_keys('admin')
driver.find_element_by_xpath('//*[@id="login"]/table/tbody/tr[3]/td[2]/input').click()

print driver.current_url