遍历WebElement时，“列表"对象没有属性"get_attribute" [英] 'list' object has no attribute 'get_attribute' while iterating through WebElements

问题描述

我正在尝试使用Python和Selenium在网页上抓取多个链接.我正在使用find_elements_by_xpath，并且能够找到元素列表，但是在更改返回到实际href链接的列表时遇到了麻烦.我知道find_element_by_xpath可以工作，但是仅适用于一个元素.

I'm trying to use Python and Selenium to scrape multiple links on a web page. I'm using find_elements_by_xpath and I'm able to locate a list of elements but I'm having trouble changing the list that is returned to the actual href links. I know find_element_by_xpath works, but that only works for one element.

这是我的代码:

path_to_chromedriver = 'path to chromedriver location'
browser = webdriver.Chrome(executable_path = path_to_chromedriver)

browser.get("file:///path to html file")

all_trails = []

#finds all elements with the class 'text-truncate trail-name' then 
#retrieve the a element
#this seems to be just giving us the element location but not the 
#actual location

find_href = browser.find_elements_by_xpath('//div[@class="text truncate trail-name"]/a[1]')
all_trails.append(find_href)

print all_trails

此代码正在返回:

<selenium.webdriver.remote.webelement.WebElement 
(session="dd178d79c66b747696c5d3750ea8cb17", 
element="0.5700549730549636-1663")>, 
<selenium.webdriver.remote.webelement.WebElement 
(session="dd178d79c66b747696c5d3750ea8cb17", 
element="0.5700549730549636-1664")>,

我希望all_trails数组是链接的列表，例如:www.google.com, www.yahoo.com, www.bing.com.

I expect the all_trails array to be a list of links like: www.google.com, www.yahoo.com, www.bing.com.

我尝试遍历all_trails列表并在列表上运行get_attribute('href')方法，但出现错误:

I've tried looping through the all_trails list and running the get_attribute('href') method on the list but I get the error:

有人知道如何将Selenium WebElement转换为href链接吗?

Does anyone have any idea how to convert the selenium WebElement's to href links?

任何帮助将不胜感激:)

Any help would be greatly appreciated :)

推荐答案

让我们看看您的代码中正在发生什么:

Let us see what's happening in your code :

对于有关的HTML没有任何可见性，似乎以下行在List find_href 中返回了两个WebElements，这些反过来又附加到了 List:

Without any visibility to the concerned HTML it seems the following line returns two WebElements in to the List find_href which are inturn are appended to the all_trails List :

find_href = browser.find_elements_by_xpath('//div[@class="text truncate trail-name"]/a[1]')

因此，当我们打印List all_trails 时，都将同时打印WebElements.因此，没有错误.

Hence when we print the List all_trails both the WebElements are printed. Hence No Error.

根据您提供的错误快照，您尝试通过不支持的List调用 get_attribute("href") 方法.因此，您会看到错误:

As per the error snap shot you have provided, you are trying to invoke get_attribute("href") method over a List which is Not Supported. Hence you see the error :

'List' Object has no attribute 'get_attribute'

解决方案:

要获取 href 属性，我们必须遍历List，如下所示:

Solution :

To get the href attribute, we have to iterate over the List as follows :

find_href = browser.find_elements_by_xpath('//your_xpath')
for my_href in find_href:
    print(my_href.get_attribute("href"))

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