如何使用 selenium python 抓取雅虎财经搜索自动建议结果？

Question

我正在尝试使用 selenium python 在 yahoo Finance 上进行自动搜索。当我输入一些单词时，会弹出一个建议，就像在谷歌建议上一样。

https://finance.yahoo.com/

我发现一个带有 xpath 的列表元素应该是 yahoo 提出的建议：

//*[@id="search-assist-input"]/div[2]/ul

建议内容似乎隐藏在这个列表中，但它是不可见的，我的意思是当我点击展开它时，它就消失了。我不知道 Firefox 或 chrome 中是否存在某种“始终展开节点”，但这些元素似乎很难达到。 我试图获取该元素下的所有子元素，它显示找不到元素：

from chrome_driver.chrome import Chrome

driver = Chrome().get_driver()
driver.get('https://finance.yahoo.com/')
driver.find_elements_by_xpath("//div[@id='search-assist-input']/div/input")[0].send_keys('goog')
x = driver.find_elements_by_xpath("//div[@data-reactid='56']/ul[@data-reactid='57']/*")

如何从搜索框中找到这些自动建议？

Answer 1

请在下面找到针对雅虎财经最新变化的修订版本。

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

options = Options()
options.add_argument("start-maximized")
options.add_argument("disable-infobars")
options.add_argument("--disable-extensions")

options.page_load_strategy = 'eager'
options.add_argument('--ignore-certificate-errors')
options.add_argument('--ignore-ssl-errors')
options.add_argument('log-level=3')
latest_news = ['Go to Latest News']

chrome_path = "C:\Python\SYS\chromedriver.exe"
driver = webdriver.Chrome(chrome_options=options, executable_path=chrome_path)
driver.get('https://finance.yahoo.com/')

WebDriverWait(driver, 5).until(EC.element_to_be_clickable((By.XPATH, "//input[@name='yfin-usr-qry']"))).send_keys("goog")
WebDriverWait(driver, 20).until(EC.text_to_be_present_in_element((By.XPATH,'//*[@id="header-search-form"]/div[2]/div[1]/div/div[1]/h3'),'Symbols'))

yahoo_fin_auto_suggestions = driver.find_elements(By.CLASS_NAME,'modules_list__1zFHY')[0].text.split('\n')
if yahoo_fin_auto_suggestions == latest_news:
    yahoo_fin_auto_suggestions = driver.find_elements(By.CLASS_NAME,'modules_list__1zFHY')[1].text.split('\n')


print(yahoo_fin_auto_suggestions)

driver.quit()

Answer 2

由于https://finance.yahoo.com/网站可能的源代码已经更改，我将@DebanjanB的答案调整为三点：

1. 点击接受cookies/提交同意
2. 搜索字段的 Xpath（至少对于德国/欧盟而言）
3. 建议列表的 Xpath

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

options = Options()
options.add_argument("start-maximized")
options.add_argument("disable-infobars")
options.add_argument("--disable-extensions")
#options.add_argument('headless') #optional for headless driver

driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\Program Files (x86)\Google\Chrome\Chromedriver\chromedriver.exe')
driver.get('https://finance.yahoo.com/')
driver.find_element_by_xpath("//button[@type='submit' and @value='agree']").click() #for cookie consent

WebDriverWait(driver, 5).until(EC.element_to_be_clickable((By.XPATH, "//input[@name='yfin-usr-qry']"))).send_keys("goog")
yahoo_fin_auto_suggestions = WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.XPATH, '(//div[@class="_0ea0377c _4343c2a0 _50f34a35"])')))
for item in yahoo_fin_auto_suggestions:
    print(item.text)

Answer 3

提取关于搜索文本的自动建议，例如GOOG 在https://finance.yahoo.com/ 的搜索框 中，您必须诱导WebDriverWait 以使自动建议可见 和您可以使用以下解决方案：

• 代码块：

  from selenium import webdriver
  from selenium.webdriver.chrome.options import Options
  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support import expected_conditions as EC
  
  options = Options()
  options.add_argument("start-maximized")
  options.add_argument("disable-infobars")
  options.add_argument("--disable-extensions")
  driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\WebDrivers\ChromeDriver\chromedriver_win32\chromedriver.exe')
  driver.get('https://finance.yahoo.com/')
  WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//input[@name='p']"))).send_keys("goog")
  yahoo_fin_auto_suggestions = WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.XPATH, "//input[@name='p']//following::div[1]/ul//li")))
  for item in yahoo_fin_auto_suggestions :
      print(item.text)
  

• 控制台输出：

  GOOG
  Alphabet Inc.Equity - NASDAQ
  GOOGL
  Alphabet Inc.Equity - NASDAQ
  GOOGL-USD.SW
  AlphabetEquity - Swiss
  GOOGL180518C01080000
  GOOGL May 2018 call 1080.000Option - OPR
  GOOG.MX
  Alphabet Inc.Equity - Mexico
  GOOG180525C01075000
  GOOG May 2018 call 1075.000Option - OPR
  GOOG180518C00720000
  GOOG May 2018 call 720.000Option - OPR
  GOOGL180518C01120000
  GOOGL May 2018 call 1120.000Option - OPR
  GOOGL.MX
  Alphabet Inc.Equity - Mexico
  GOOGL190621C01500000
  GOOGL Jun 2019 call 1500.000Option - OPR