Python+selenium+webdriver can't locate the elements of the page, and the newcomer has been bothered for several days by asking for help.

< H1 > using Python+selenium+webdriver for automated testing, it was found that the page elements could not be crawled. My process is like this: open the Baidu home page, enter segementfault to click on the search, select the first search result, enter the Sifu home page, no matter what I do, all the elements on the page can not be crawled, prompt me selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element:. < / H1 > < H1 > but the strange thing is that if I go directly to the home page of Si No, without searching through Baidu, I can grab the elements of the page. The code is the same and no change has been made. < / H1 > < H1 > the code is as follows: < / H1 >

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time
driver = webdriver.Firefox ()
driver.get ("https://www.baidu.com/")
print(driver.title)
driver.find_element_by_xpath("//*[@id="kw"]").send_keys("codeshelper")
driver.find_element_by_xpath("//*[@" Id= "su"]"). Click ()
time.sleep (3)
driver.find_element_by_xpath ("/ html/body/div [1] / div [5] / div [1] / div [3] / div [1] / h3) a"). Click ()
time.sleep (5)
driver.find_element_by_xpath ("/ html/body/div [4] / div/div/div [1] / div [2] / a [1]"). Click ()
driver.) Find_element_by_xpath ("/ html/body/div [4] / div/div/div [2] / div [4] / div [1] / div/a [2] / div [1] / h4"). Click ()

from selenium import webdriver from selenium.webdriver.common.keys import Keys from selenium.webdriver.common.by import By from selenium.webdriver.support.wait import WebDriverWait from selenium.webdriver.support import expected_conditions as EC import time driver = webdriver.Chrome() driver.get("https://www.baidu.com/") print(driver.title) driver.find_element_by_xpath('//*[@id="kw"]').send_keys('segmentfault') driver.find_element_by_xpath('//*[@id="su"]').click() time.sleep(3) driver.find_element_by_xpath("/html/body/div[1]/div[5]/div[1]/div[3]/div[1]/h3/a").click() time.sleep(5) driver.switch_to_window(driver.window_handles[-1]) driver.find_element_by_xpath('/html/body/div[4]/div/div/div[1]/div[2]/a[1]').click() driver.find_element_by_xpath('/html/body/div[4]/div/div/div[2]/div[4]/div[1]/div/a[2]/div[1]/h4').click()