Question

我只需要一些帮助，因为我已经开发了我的小脚本，但添加新功能会产生问题。问题是添加If else语句。如果脚本没有找到任何元素，脚本会崩溃所以我想通过放置一个ifelse条件来绕过它，即如果元素存在，它应该单击按钮，否则它应该移动到下一行。

以下是我的代码

driver.find_element_by_css_selector('input.whsOnd.zHQkBf').send_keys(password)

    time.sleep(2)
    driver.find_element_by_id("passwordNext").click()
    time.sleep(2)

    driver.get(comment_url)
    time.sleep(2)

    driver.find_element_by_xpath("//button[@class='yt-uix-button yt-uix-button-size-default yt-uix-button-default yt-uix-button-empty yt-uix-button-has-icon no-icon-markup comment-action-buttons-renderer-thumb yt-uix-sessionlink sprite-comment-actions sprite-like i-a-v-sprite-like']").click()
    time.sleep(2)
    driver.find_element_by_xpath("//button[@class='yt-uix-button yt-uix-button-size-small yt-uix-button-link comment-renderer-reply comment-simplebox-trigger']").click()
    time.sleep(2)
    driver.find_element_by_class_name("comment-simplebox-text").send_keys(comment)
    time.sleep(2)
    driver.find_element_by_xpath("//button[@class='yt-uix-button yt-uix-button-size-default yt-uix-button-primary yt-uix-button-empty comment-simplebox-submit yt-uix-sessionlink']").click()
    time.sleep(2)

我要添加的代码是：

if driver.find_element_by_xpath ...... exists,
then
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   print("Zoom in 4x. Successful")
else
   print("Element does not exist, it failed.")

我是仅添加（if）还是if（如果是driver.find_element_by_xpath（＆＃34;＆＃34;），脚本在几毫秒内崩溃，甚至没有打开。

Answer 1

您需要尝试捕获异常，如果捕获异常，请在except块中执行某些操作。说到你的场景，你可能需要抓住selenium.common.exceptions.NoSuchElementException。因此代码可能如下所示：

from selenium.common.exceptions import NoSuchElementException

try:
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   driver.find_element_by_xpath("//*[@class=\"leaflet-control-zoom-in\"]").click()
   print("Zoom in 4x. Successful")
except NoSuchElementException:
   print("Element does not exist, it failed.")

添加后，Python Selenium脚本崩溃了

1 个答案: