如何使用 Python 在 iframe 中切换 Selenium 焦点

Question

我无法从网站上的下拉菜单中选择复选框。下拉菜单位于 iframe 内，当我尝试切换到 iframe 时，我不断收到TimeoutException消息：。

下面是我正在尝试的代码和 HTML。我是 Python 的新手，所以对此的任何帮助将不胜感激。

Python：

wait = WebDriverWait(driver, 20)

frm1= wait.until(EC.presence_of_element_located((By.ID, "ReportViewerControl_ctl04_ctl03_ctl01")))

driver.switch_to.frame(frm1)

HTML:

<iframe id="ReportViewerControl_ctl04_ctl03_ctl01" onclick="event.cancelBubble=true;" onactivate="event.cancelBubble=true;" style="display: block; position: absolute; z-index: 10; left: 208px; top: 35px; width: 198px; height: 166px;" src="javascript:'';" frameborder="0" title="Area place holder" longdesc="Area place holder" name="ReportViewerControl_ctl04_ctl03_ctl01"></iframe>

Answer 1

要在而不是中切换Selenium的焦点，您必须：<iframe>presence_of_element_located()诱导WebDriverWait以等待所需的框架可用并切换到它。您可以使用以下任一定位器策略：使用CSS_SELECTOR：WebDriverWait(driver,&nbsp;10).until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR,"iframe[name^='ReportViewerControl'][longdesc='Area&nbsp;place&nbsp;holder']")))使用XPATH：WebDriverWait(driver,&nbsp;10).until(EC.frame_to_be_available_and_switch_to_it((By.XPATH,"//iframe[starts-with(@id,&nbsp;'ReportViewerControl')&nbsp;and&nbsp;@title='Area&nbsp;place&nbsp;holder']")))注意：您必须添加以下导入：from&nbsp;selenium.webdriver.support.ui&nbsp;import&nbsp;WebDriverWait from&nbsp;selenium.webdriver.common.by&nbsp;import&nbsp;By from&nbsp;selenium.webdriver.support&nbsp;import&nbsp;expected_conditions&nbsp;as&nbsp;EC