求助Python+webdriver向jquery中传入变量

#coding=utf-8
from selenium import webdriver
import time
driver = webdriver.Firefox()
driver.get("")
#给搜索输入框标红javascript脚本
js="var q=document.getElementById(\"kw\");q.style.border=\"2px solid red\";"
#调用给搜索输入框标红js脚本
driver.execute_script(js)
time.sleep(3)
#单独执行js脚本
driver.execute_script('alert("输入框标红了!")')
time.sleep(3)
#接受提示信息
driver.switch_to_alert().accept()
time.sleep(3)
#js隐藏元素,将获取的图片元素隐藏
img1 = driver.find_element_by_xpath("//*[@id='lg']/img")
driver.execute_script('$(arguments[0]).fadeOut()',img1)
time.sleep(3)
driver.find_element_by_xpath("//*[@id='kw']").send_keys("selenium")
driver.find_element_by_xpath("//*[@id='su']").click()
time.sleep(3)
driver.quit()