Python 如何正确设置此while循环？

我正在我的一个应用程序中创建一个函数，它将通过每隔5秒重新加载页面来检查缩放会议是否存在。我在Python3中使用Selenium

以下是我现在所做的：

def CheckZoomMeeting():

    # Attempts to locate the Zoom meeting.
    try:
        element_present = driver.find_element_by_xpath('/html/body/div[1]/div/div/div[2]/div/div/div[1]/div[1]/div/div/div/div[1]/div[2]')   # ADD THE JOIN MEETING XPATH HERE

    # If the element does not exist, it is False.
    except NoSuchElementException:
        element_present = False

    # This is a loop that will keep reloading the page every 5 seconds, until element_present does not equal False.
    while element_present == False:
        time.sleep(5)
        driver.refresh()

    # Once it equals something other than False (meaning the Zoom meeting is there), it will just continue on.
    else:
        pass

虽然我现在无法实际测试这一点（因为目前实际上没有设置缩放会议），但据我所知，这将永远保持重新加载，因为结果存储在

元素\u present

中

因此，我要做的是创建一个循环，如果元素不在那里，则每5秒重新加载一次页面，每次都要检查元素是否在那里，然后

else:pass#继续执行其余的代码

如果

element\u present=driver，这将很容易。通过xpath（'/html/body/div[1]/div/div/div[2]/div/div/div[1]/div[1]/div/div/div/div[1]/div[2]”查找元素。

返回了一个

True

或

False

变量，但默认情况下它不返回。我该怎么做才能使这个循环真正工作

---

这可能是我应该想到的一个简单的解决方案，但我没有想到。

将变量设置为

None

，然后循环，直到变量设置为值

def CheckZoomMeeting():

    element_present = None

    # Attempts to locate the Zoom meeting.
    while not element_present:  # until element found
        try:
            element_present = driver.find_element_by_xpath('/html/body/div[1]/div/div/div[2]/div/div/div[1]/div[1]/div/div/div/div[1]/div[2]')   # ADD THE JOIN MEETING XPATH HERE

        # If the element does not exist, it is False.
        except NoSuchElementException:
            element_present = False

        # This is a loop that will keep reloading the page every 5 seconds, until element_present does not equal False.
        if not element_present:
            time.sleep(5)
            driver.refresh()

    # Once it equals something other than False (meaning the Zoom meeting is there), it will just continue on.

---

正是我想要的。谢谢，下次我会知道的！