python硒 - 鼻琴感应，尽管发现了该值

发布于 2025-02-08 08:11:32 字数 1924 浏览 4 评论 0原文

我在AWS上的Lambda功能中运行了Python Selenium脚本。

使用XPath，我尝试找到分页按钮移至下一页。

我使用以下代码：

button_next = driver.find_element_by_xpath('//a[@data-at="pagination-next"]')

代码有效，因为我能够打印它并将事件提取URL并打印出来：

url = button_next.get_attribute("href")

但是在日志中，我会收到以下错误，但是在我能够打印之后：

Message: no such element: Unable to locate element: {"method":"xpath","selector":"//a[@data-at="pagination-next"]"}
  (Session info: headless chrome=65.0.3325.181)
  (Driver info: chromedriver=2.37.544315 (730aa6a5fdba159ac9f4c1e8cbc59bf1b5ce12b7),platform=Linux 4.14.255-276-224.499.amzn2.x86_64 x86_64)
: NoSuchElementException
Traceback (most recent call last):
  File "/var/task/lambda_function.py", line 69, in lambda_handler
    button_next = driver.find_element_by_xpath('//a[@data-at="pagination-next"]')
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 368, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 858, in find_element
    'value': value})['value']
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 311, in execute
    self.error_handler.check_response(response)
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 237, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//a[@data-at="pagination-next"]"}
  (Session info: headless chrome=65.0.3325.181)
  (Driver info: chromedriver=2.37.544315 (730aa6a5fdba159ac9f4c1e8cbc59bf1b5ce12b7),platform=Linux 4.14.255-276-224.499.amzn2.x86_64 x86_64)

什么是问题这里？尽管XPath以前刚刚起作用，但为什么我会遇到此错误。

原文

I'm running a python selenium script in a lambda function on AWS.

With xpath I try to find the pagination button to move to the next page.

I use the following code:

button_next = driver.find_element_by_xpath('//a[@data-at="pagination-next"]')

The code works, because I'm able to print it and event extract the URL and also print it:

url = button_next.get_attribute("href")

But in the log I get the following error but after I was able to print it:

Message: no such element: Unable to locate element: {"method":"xpath","selector":"//a[@data-at="pagination-next"]"}
  (Session info: headless chrome=65.0.3325.181)
  (Driver info: chromedriver=2.37.544315 (730aa6a5fdba159ac9f4c1e8cbc59bf1b5ce12b7),platform=Linux 4.14.255-276-224.499.amzn2.x86_64 x86_64)
: NoSuchElementException
Traceback (most recent call last):
  File "/var/task/lambda_function.py", line 69, in lambda_handler
    button_next = driver.find_element_by_xpath('//a[@data-at="pagination-next"]')
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 368, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 858, in find_element
    'value': value})['value']
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 311, in execute
    self.error_handler.check_response(response)
  File "/opt/python/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 237, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//a[@data-at="pagination-next"]"}
  (Session info: headless chrome=65.0.3325.181)
  (Driver info: chromedriver=2.37.544315 (730aa6a5fdba159ac9f4c1e8cbc59bf1b5ce12b7),platform=Linux 4.14.255-276-224.499.amzn2.x86_64 x86_64)

What is the issue here? Why do I get this error, although the xpath just worked before.

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魔法少女 2025-02-15 08:11:32

所需的元素是动态元素，因此要单击 clickable 元素，您需要诱导 webdriverwait 对于 emeltion_to_be_clickable（）以下 定位器策略 ：

使用 css_selector ：：：：

  webdriverwait（驱动程序，20）.until（ec.element_to_be_be_clickable（（（by.css_selector），“ a [data-at ='pagination-next']））。

使用 xpath ：

  webdriverwait（驱动程序，20）.until（ec.element_to_be_be_clickable（（（by.xpath，“ // a [@data-at-at ='pagination-next']））。

注意：您必须添加以下导入：

 来自selenium.webdriver.support.ui导入webdriverwait
从selenium.webdriver.common.通过进口
从selenium.webdriver.support进口预期_conditions作为ec

另外，请确保：

selenium 升级到当前发布 版本4.2.0 。
ChromeDriver 已更新为当前“ norefrowl noreferrer”> chromedriver v102。 0 级别。
Chrome浏览器已更新为Current Chrome = 102.0 （按 chromedriver = 102.0.5005.61发行说明）。

The desired element is a dynamic element so to click on the clickable element you need to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following locator strategies:

Using CSS_SELECTOR:

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "a[data-at='pagination-next']"))).click()

Using XPATH:

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//a[@data-at='pagination-next']"))).click()

Note: You have to add the following imports :

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

Additionally, ensure that:

Selenium is upgraded to current released Version 4.2.0.
ChromeDriver is updated to current ChromeDriver v102.0 level.
Chrome Browser is updated to current chrome=102.0 (as per chromedriver=102.0.5005.61 release notes).