python selenium保持清爽,直到找到物品(Chromedriver) [英] python selenium keep refreshing until item found (Chromedriver)

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问题描述

我试图通过使用selenium来保持刷新当前chromepage的Python脚本功能,直到例如使 driver.find_element_by_partial_link_text(Schott)



我在想这个:

  while not driver.find_element_by_partial_link_text (Schott):
driver.refresh
driver.find_element_by_partial_link_text(Schott)。click()

然而,似乎函数 driver.find_element_by_partial_link_text(Schott)并不是匹配需求的方式。有没有其他方式可以实现这个请求?

顺便说一句,目前我使用driver.get(url)打开网页,但我想知道如何运行我已经打开的现有网页上的脚本?

解决方案

使用 find_element _... 会引发 NoSuchElementExeception 。由于我不知道你在做什么网站,我不知道最佳做法是什么。但是,如果只是刷新页面以检查元素,则可以尝试以下操作:从selenium导入webdriver $ b中的

  $ b from selenium.common.exceptions import NoSuchElementException 

driver.Firefox()#或任何您正在使用的webdriver
driver.get(您将要访问的网址)
True:
try:
driver.find_element_by_partial_link_text(Schott):
,除了NoSuchElementException:
driver.refresh
else:
driver.find_element_by_partial_link_text(点击()
break


I am trying to achieve the feature of a Python script using selenium to keep refreshing the current chromepage until, for example, the certain item that makes driver.find_element_by_partial_link_text("Schott") is found.

I was thinking about this:

while not driver.find_element_by_partial_link_text("Schott"):
    driver.refresh
driver.find_element_by_partial_link_text("Schott").click()

However, it seems like the function driver.find_element_by_partial_link_text("Schott") is not the way to match the need. Is there other way I can achieve this please?

BTW, currently I am using driver.get(url) to open the webpage but I am wondering how do i run the script on existing webpage that I already open?

解决方案

Using find_element_... will raise a NoSuchElementExeception if it can't find the element. Since I don't know what site you are running this against, i don't know what the best practice would be. However, if it's simply refreshing the page to check for the element, you could try the following:

from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException

driver.Firefox()  # or whatever webdriver you're using
driver.get(url that you are going to)
while True:
    try:
        driver.find_element_by_partial_link_text("Schott"):
    except NoSuchElementException:
        driver.refresh
    else:
        driver.find_element_by_partial_link_text("Schott").click()
        break

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