By支持的定位器元素包括：

CLASS_NAME = 'class name'

CSS_SELECTOR = 'css selector'

ID = 'id'

LINK_TEXT = 'link text'

NAME = 'name'

PARTIAL_LINK_TEXT = 'partial link text'

TAG_NAME = 'tag name'XPATH = 'xpath'

使用By前需要先import：from selenium.webdriver.common.by import By

1. find_element(By.ID,"kw")

2. find_element(By.NAME,"wd")

3. find_element(By.CLASS_NAME,"s_ipt")

4. find_element(By.TAG_NAME,"input")

5. find_element(By.LINK_TEXT,"新闻板块“）

6. find_element(By.PARTIAL_LINK_TEXT,"新”)

7. find_element(By.XPATH,"//*[@class='s_ipt']")

8. find_element(By.CSS_SELECTOR,“#kw”)