使用 selenium 和 Python 时，如何设置等待条件来检查没有一个 div 元素具有包含特定字符串的 ID？

发布于 2025-01-17 08:19:39 字数 1303 浏览 0 评论 0原文

这是xpath的一个示例，以计算元素 $ x（“ count（// div [contains（text（），'domain'）]）”）◄您可以在浏览器中对此进行测试
如果满足等待条件，则以下代码应工作（在文本中包含“域”的“ p”标签。

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.support.ui import WebDriverWait
options = webdriver.FirefoxOptions()
options.add_argument("--headless") # Ensure GUI is off
webdriver_service = Service("/home/myuser/geckodriver/geckodriver")
browser = webdriver.Firefox(service=webdriver_service, options=options)
# Get element with tag name 'div'
xpath_count_condition="bolean(count(//p[contains(text(), 'domain')])==1)"
browser.get("https://www.example.com")
wait=WebDriverWait(browser, 3).until(lambda browser: 
browser.find_element(by=By.XPATH,value=xpath_count_condition))   
element = browser.find_element(By.TAG_NAME, 'lulu')

# Get all the elements available with tag name 'p'
elements = element.find_elements(By.TAG_NAME, 'p')
for e in elements:
    print(e.text)

我遇到此错误 无效的Selectorexception：消息：给定的XPath表达式“ Bolean（// c count（contains（text（），'domain'）））== 1）” == 1）”是无效的：syntaxerror：document.evaluate：eversevaluate：表达式不是一个表达式法律表达

我希望一旦上述工作，我就可以将其变成负面搜索（count == 0），因此主题行是我所追求的

原文

This is an example of XPATH to count the elements
$x("count(//div[contains(text(),'domain')])") ◄ you can test this in the browser
The below code should work if the wait condition is satisfied (find a "p" tag where the text contains "domain".

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.support.ui import WebDriverWait
options = webdriver.FirefoxOptions()
options.add_argument("--headless") # Ensure GUI is off
webdriver_service = Service("/home/myuser/geckodriver/geckodriver")
browser = webdriver.Firefox(service=webdriver_service, options=options)
# Get element with tag name 'div'
xpath_count_condition="bolean(count(//p[contains(text(), 'domain')])==1)"
browser.get("https://www.example.com")
wait=WebDriverWait(browser, 3).until(lambda browser: 
browser.find_element(by=By.XPATH,value=xpath_count_condition))   
element = browser.find_element(By.TAG_NAME, 'lulu')

# Get all the elements available with tag name 'p'
elements = element.find_elements(By.TAG_NAME, 'p')
for e in elements:
    print(e.text)

I am getting this error
InvalidSelectorException: Message: Given xpath expression "bolean(count(//p[contains(text(), 'domain')])==1)" is invalid: SyntaxError: Document.evaluate: The expression is not a legal expression

I would expect that once the above works I can turn that into a negative search (count==0) hence the subject line which is what I am after

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咆哮 2025-01-24 08:19:39

要等待所有具有 ID 的

元素不包含特定字符串，您需要引入 WebDriver等待 invisibility_of_element_ located() 并且您可以使用以下任一定位策略：

使用xpath：

WebDriverWait(driver, 20).until(EC.invisibility_of_element((By.XPATH, "//div[contains(@id, 'domain')]")))

注意：您必须添加以下导入：

从 selenium.webdriver.support.ui 导入 WebDriverWait
从 selenium.webdriver.common.by 导入
从 selenium.webdriver.support 导入预期条件作为 EC

参考文献

您可以在以下位置找到相关的详细讨论：

Selenium Explicit Waits对于 invisibility_of_element() 根本不等待

To wait for all the <div> elements with an ID not to contain a certain string you need to induce WebDriverWait for the invisibility_of_element_located() and you can use either of the following locator strategies:

Using xpath:

WebDriverWait(driver, 20).until(EC.invisibility_of_element((By.XPATH, "//div[contains(@id, 'domain')]")))

Note : You have to add the following imports :

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