Python selenium send_keys 在 Chrome 中不起作用

Question

我是 python 编码新手。我正在尝试在 chrome 中使用 python 和 Selenium。我有这段代码，我试图上下移动网页。但它不起作用。

body_elem = browser.find_element_by_tag_name('body')

for __ in range(3):
    body_elem.send_keys(Keys.END)
    sleep(2)
    body_elem.send_keys(Keys.HOME)
    sleep(2)

我得到的只是这么长的错误消息:

Traceback (most recent call last):
  File "selenium_test.py", line 34, in <module>
    body_elem.send_keys(Keys.HOME)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webelement.py", line 479, in send_keys
    'value': keys_to_typing(value)})
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webelement.py", line 628, in _execute
    return self._parent.execute(command, params)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/webdriver.py", line 312, in execute
    self.error_handler.check_response(response)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document

有人知道出了什么问题吗？

Answer 1

这很可能是因为 DOM 树或 body 元素签名本身在第一次“向下”移动后发生了变化。解决该问题的一种直接方法是不断“重新查找”元素:

for _ in range(3):
    browser.find_element_by_tag_name('body').send_keys(Keys.END)
    sleep(2)
    browser.find_element_by_tag_name('body').send_keys(Keys.HOME)
    sleep(2)