python - 如何使用Selenium Python从duckduckgo的搜索结果中提取文本

Question

我正在尝试使用以下内容获取搜索结果的鸭鸭的链接描述：

results=browser.find_elements_by_xpath("//div[@id='links']/div/div/div[2]")
description=[]
for result in results:
  description.append(result.text)

我收到错误“列表”对象没有属性“文本”。我能够使用类似的方法来获取搜索结果标题，但由于某种原因，我无法从这个特定的 xpath 中提取文本。

Answer 1

要从中提取搜索结果的链接描述，DuckDuckGo您必须诱导WebDriverWait以使所有元素可见，您可以使用以下解决方案：

• 代码块：

  from selenium import webdriver
  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.support import expected_conditions as EC
  from selenium.webdriver.common.by import By
  
  options = webdriver.ChromeOptions()
  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:\Utility\BrowserDrivers\chromedriver.exe')
  driver.get('https://duckduckgo.com/')
  search_box = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.NAME, "q")))
  search_box.send_keys("Selenium")
  search_box.submit()
  elements = WebDriverWait(driver, 10).until(EC.visibility_of_all_elements_located((By.XPATH, "//div[@id='links']/div/div/div[2]")))
  for ele in elements:
      print(ele.text)
  driver.quit()
  

• 控制台输出：

  What is Selenium? Selenium automates browsers.That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
  Selenium is a mineral found in the soil. Selenium naturally appears in water and some foods. While people only need a very small amount, selenium plays a key role in the metabolism.. Why do people ...
  Selenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.
  Selenium is a trace mineral found naturally in the soil that also appears in certain high-selenium foods, and there are even small amounts in water.. Selenium is an extremely vital mineral for the human body as it increases immunity, takes part in antioxidant activity that defends against free radical damage and inflammation, and plays a key role in maintaining a healthy metabolism.
  Introduction. Selenium is a trace element that is naturally present in many foods, added to others, and available as a dietary supplement. Selenium, which is nutritionally essential for humans, is a constituent of more than two dozen selenoproteins that play critical roles in reproduction, thyroid hormone metabolism, DNA synthesis, and protection from oxidative damage and infection [].
  Selenium is an essential trace mineral that is important for many bodily processes, including cognitive function, a healthy immune system, and fertility in both men and women.
  Your body relies on selenium, an important mineral, for many of its basic functions, from reproduction to fighting infection. The amount of selenium in different foods depends on the amount of ...
  Overview Information Selenium is a mineral. It is taken into the body in water and foods. People use it for medicine. Most of the selenium in the body comes from the diet. The amount of selenium ...
  Selenium WebDriver. The biggest change in Selenium recently has been the inclusion of the WebDriver API. Driving a browser natively as a user would either locally or on a remote machine using the Selenium Server it marks a leap forward in terms of browser automation.
  Downloads. Below is where you can find the latest releases of all the Selenium components. You can also find a list of previous releases, source code, and additional information for Maven users (Maven is a popular Java build tool).
  

Answer 2

您不必为空列表创建 for 循环...尝试使用以下代码：

results=driver.find_elements_by_xpath("//div[@id='links']/div/div/div[2]")

description=[]

for result in results:
    description.append(result.text)

示例：为了测试这一点，我只是在 DuckDuckGo 中输入了“hmm”，因此 URL 为https://duckduckgo.com/?q=hmm&t=h_&ia=web

from selenium import webdriver

driver=webdriver.Chrome()
driver.get('https://duckduckgo.com/?q=hmm&t=h_&ia=web')

results=driver.find_elements_by_xpath("//div[@id='links']/div/div/div[2]")

description=[]

for result in results:
    description.append(result.text)

print(description[0])
print(' ')
print(description[1])
print(' ')
print(description[2])

输出：

HMM将开发“New-GAUS 2020”... HMM举行'PSA-Hyundai Pusan N... HMM命名新VLCC，'Universal... 2019新年贺词；HMM的未来计划；HMM 202年蓝图... HMM签署正式合同...

嗯定义，（通常用于表示深思熟虑的吸收、犹豫、怀疑或困惑。）查看更多。

2 � 曾经强调一个人已经提出了一个问题，正在等待一个答案 但现在告诉圣诞老人真相，对于一个小男孩或女孩来说，最重要的部分是什么？盒子

搜索结果：