Python Selenium如何在单击链接之前等待 [英] Python Selenium how to wait before clicking on link

问题描述

我只是想知道，如何让浏览器在单击链接之前等待?我的目标是从动态网页抓取内容，内容是动态的，但我设法获取表单ID.唯一的问题是，提交按钮仅在2-3秒后显示.但是，我的Firefox驱动程序在页面加载后(而不是动态部分)立即开始单击链接.

I just wonder, how to have the browser wait before clicking on a link? My goal is that I'm scraping from a dynamic webpage, the content is dynamic but I manage to get the form id. The only problem is that the submit button is only displayed after 2-3 seconds. However, my Firefox driver start clicking on the link immediately when the page is loaded (not the dynamic part).

有什么方法可以让我的浏览器等待2-3秒，直到出现提交按钮?我尝试使用time.sleep()，但是它会暂停所有操作，time.sleep期间，提交按钮不会出现，而是在2-3秒后出现.

Is there any way that I can make my browser wait 2-3 seconds until the submit button appears? I tried to use time.sleep() but it pauses everything, the submit button doesn't appear during time.sleep but appears after 2-3 seconds when time.sleep ends.

推荐答案

您可以按以下方式设置等待时间:

You can set wait like following :

明确等待:

    element = WebDriverWait(driver, 20).until(
    EC.presence_of_element_located((By.ID, "myElement"))

隐式等待:

 driver.implicitly_wait(20) # seconds
 driver.get("Your-URL")
 myElement = driver.find_element_by_id("myElement")

您可以使用以上任何一种.两者都有效.

You can use any of above. Both are valid.

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