selenium元素定位失效的解决措施

前期语法：from selenium import webdriver
 driver.find_element_by_id('//*[@id="kw"]').send_keys('python') driver.find_element_by_css_SELECTOR('#kw').send_keys('python') driver.find_element_by_name('wd').send_keys('python') driver.find_element_by_class('s_ipt').send_keys('python')
time.sleep(3) 
driver.find_element_by_id('su').click() 
time.sleep(2) 
driver.find_element_by_link_text(新闻').click() 


最新语法：
from selenium import webdriver
from selenium.webdriver.common.by import By
url = 'http://www.baidu.com'
import time

driver = webdriver.Chrome()
driver.get(url)
driver.find_element(By.XPATH,'//*[@id="kw"]').send_keys('python')
driver.find_element(By.CSS_SELECTOR,'#kw').send_keys('python')
driver.find_element(By.NAME,'wd').send_keys('python')
driver.find_element(By.CLASS_NAME,'s_ipt').send_keys('python')
time.sleep(3)
driver.find_element(By.ID,'su').click()
time.sleep(2)
driver.find_element(By.LINK_TEXT,'新闻').click()
river.find_element(By.PARTIAL_LINK_TEXT,'hao').click()
time.sleep(3)