Simple operation of python+selenium input box

background ： Arrears before reissue ,17 It was written locally in , Never uploaded
This is python+selenium Input box simple operation

#coding=utf-8
from selenium import webdriver
import time
driver = webdriver.Firefox()
driver.get('http://www.baidu.com')
driver.find_element_by_id("kw").send_keys("selenium")
time.sleep(2)
driver.find_element_by_id("kw").clear()
time.sleep(2)
driver.find_element_by_id("kw").send_keys("selenium")
driver.find_element_by_id("su").click()
time.sleep(2)
# wait 4 second 
driver.quit()
# Close the browser