python - Selenium WebDriver - 处理 StaleElementReferenceException (Python)

Question

我正在使用 Selenium 编写 Python 代码，该代码单击网页上的按钮。单击按钮后，按钮会变为其他内容。我的代码工作得很好，但 Selenium 将此误解为一个问题。我试图忽略异常并继续，但我尝试过的任何方法都不起作用。

from selenium.common.exceptions import StaleElementReferenceException

try:
    browser.find_element_by_xpath("//*[contains(text(), 'SomeButtonText')]").click()
except StaleElementReferenceException:
    pass

我可以做什么来忽略异常并继续前进？我的代码适用于我想要做的事情，但几秒钟后，抛出异常。

Message: Element not found in the cache - perhaps the page has changed since it was looked up

这是来自 Ubuntu 终端的极其困惑的信息:

File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webelement.py", line 107, in get_attribute
    resp = self._execute(Command.GET_ELEMENT_ATTRIBUTE, {'name': name})
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webelement.py", line 454, in _execute
    return self._parent.execute(command, params)
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 201, in execute
    self.error_handler.check_response(response)
  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 181, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.StaleElementReferenceException: Message: Element not found in the cache - perhaps the page has changed since it was looked up
Stacktrace:
    at fxdriver.cache.getElementAt (resource://fxdriver/modules/web-element-cache.js:9351)
    at Utils.getElementAt (file:///tmp/tmp24d8CK/extensions/fxdriver@googlecode.com/components/command-processor.js:8978)
    at WebElement.getElementAttribute (file:///tmp/tmp24d8CK/extensions/fxdriver@googlecode.com/components/command-processor.js:12019)
    at DelayedCommand.prototype.executeInternal_/h (file:///tmp/tmp24d8CK/extensions/fxdriver@googlecode.com/components/command-processor.js:12534)
    at DelayedCommand.prototype.executeInternal_ (file:///tmp/tmp24d8CK/extensions/fxdriver@googlecode.com/components/command-processor.js:12539)
    at DelayedCommand.prototype.execute/< (file:///tmp/tmp24d8CK/extensions/fxdriver@googlecode.com/components/command-processor.js:12481)

Answer 1

我找到了问题的答案。

这里的代码:

try:
    browser.find_element_by_xpath("//*[contains(text(), 'SomeButtonText')]").click()
except StaleElementReferenceException:
    pass

在 for 循环结束时执行。我完全错过了这样一个事实:它返回到循环的开头，在那里我遇到了一个单独的问题，即过时的引用异常。