selenium-模拟键盘事件(回车、删除、刷新等)

sendkeys可以模拟键盘输入，也可以用来模拟键盘上的按键，甚至是组合键

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.action_chains import ActionChains
from time import sleep,ctime
driver = webdriver.Firefox()
driver.get(“https://www.baidu.com”)
el = driver.find_element(By.ID, “kw”)
el.send_keys(“seleniumm”)
el.send_keys(Keys.BACK_SPACE)
el.send_keys(Keys.SPACE)
el.send_keys(“教程”)
el.send_keys(Keys.CONTROL, ‘a’)
el.send_keys(Keys.CONTROL, ‘x’)
el.send_keys(Keys.CONTROL, ‘v’)
el.send_keys(Keys.ENTER)
driver.close()

问题：如果遇到以下错误，是没有导入Keys导致的

from selenium.webdriver.common.keys import Keys