Selenium WebDriverWait 无法检测用于使用 Selenium 提交嵌入式视频答案的表单元素

我一直在使用 Selenium 编写一个机器人来自动化学校强迫我做的系列教程。 在本教程中，有一个视频在中途提示用户填写表格和一些问题。 我一直在尝试使用此代码在视频播放时等待，直到表单可见

    WebDriverWait(driver, 1000).until(
        EC.presence_of_element_located((By.ID, "answer_content_A11A59DC-2C74-11EE-83FC-C435C68A4852"))
    )

此 ID 在视频开始时不可见，但一旦出现表单就可以找到。 但是，该脚本永远不会超过 WebDriverWait() 块。

我也尝试过根据其他元素的出现情况进行等待，但它们似乎提出了同样的问题。 每次他们卡在 WebDriverWait() 上时。

然后我尝试等待 30 秒让表单变得可见，但这也不起作用。

    #Presses Play on Video
    driver.find_element(By.CLASS_NAME, "slip_button_icon").click()
    #Full duration of Video
    time.sleep(30)
    driver.find_element(By.ID, "answer_content_A11A59DC-2C74-11EE-83FC-C435C68A4852").click()

即使当我命令 F ID 时也会出现此错误在我的 Selenium 浏览器中，我能够找到它。

发生错误：消息：没有这样的元素：无法定位元素：{“method”：“css选择器”，“selector”：“[id =“answer_content_A11A59DC- 2C74-11EE-83FC-C435C68A4852"]"} （会话信息：chrome=127.0.6533.72）；有关此错误的文档，请访问： https://www.selenium.dev/documentation/webdriver/troubleshooting/errors#no-such-element-exception

The problem is likely that the element you are trying to find is inside an iframe. By default, Selenium looks for elements in the top-level document. You need to switch the driver's context to the iframe before searching for elements within it.

Here's a breakdown of how to solve this and improve your code:

1. Identify the iframe:

• Inspect the page source: Use your browser's developer tools (right-click on the page -> "Inspect" or "Inspect Element") to find the iframe containing the form. Look for an <iframe> tag.
• Get the iframe's name or ID: The iframe will usually have a name or id attribute. You will need this to switch to the iframe.

2. Switch to the iframe:

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

# ... your code ...

# Example: Assuming the iframe has an id "videoPlayerFrame"
iframe = WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, "videoPlayerFrame")))
driver.switch_to.frame(iframe) 

3. Find and interact with the element:

# Now that you're in the iframe's context, try finding the element again
form_element = WebDriverWait(driver, 10).until(
    EC.presence_of_element_located((By.ID, "answer_content_A11A59DC-2C74-11EE-83FC-C435C68A4852"))
)

# Interact with the element as needed
form_element.click() 

4. Switch back to the default content (important):

• Once you are finished interacting with elements inside the iframe, switch back to the main content of the webpage:

driver.switch_to.default_content()

Additional Tips:

• Explicit Waits are key: Use WebDriverWait to wait for elements to become interactable. This is much more reliable than fixed time.sleep() calls.
• Handle potential errors: Use try-except blocks to handle situations where the iframe or element might not be found.
• Dynamic IDs: If the element ID is dynamically generated, explore other locators like CSS selectors or XPath to target it reliably.

Remember: Replace the example iframe ID and element ID with the actual values from your webpage.