对浏览器进行控制的方法

 实际训练代码：

from selenium import webdriver

from time import sleep

from selenium.webdriver.common.by import By
# 通过ID来定位
driver = webdriver.Chrome()
driver.maximize_window()
driver.get('http://www.baidu.com')
sleep(3)
driver.find_element(By.ID, 'kw').send_keys("极客时间")
driver.find_element(By.ID, "su").click()
sleep(3)
driver.get_screenshot_as_file('1.结尾截图.png')
print("当前的网址：", driver.current_url)
print("当前的源码：", driver.page_source)
sleep(3)
driver.quit()