使用下拉菜单时出错-Python Selenium

Question

大家好

我正在尝试使用class_name / xpath从下拉列表中选择一个值但它不起作用。尝试使用ID，但发现ID保持不变变化。在这方面需要帮助。

This is the dropdown where im trying to select short description

下面是我的代码：

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver import ActionChains
from selenium.webdriver.support.ui import Select
import time

username = '*****'
password = '*****'

url = 'https://*****.service-now.com/'

driver = webdriver.Chrome("C:\WebDrivers\chromedriver.exe")
driver.get(url)

driver.switch_to.frame('gsft_main')
driver.maximize_window()

driver.find_element_by_id('user_name').send_keys(username)
driver.find_element_by_id('user_password').send_keys(password)
driver.find_element_by_id('sysverb_login').click()

wait = WebDriverWait(driver, 10)
incident = wait.until(EC.visibility_of_element_located((By.XPATH, '//span[contains(text(), 
"Incident")]')))
incident.click()

open = driver.find_element_by_link_text('Open - Unassigned')
open.click()

time.sleep(25)

element = driver.find_element_by_class_name('form-control default-focus-outline')
dropdown.Select(element)
dropdown.select_by_value('short_description')

下面是我复制并获得的元素。复制元素：

<select id="d5f43fd407945410af12f2ae7c1ed05c_select" class="form-control default-focus-outline" aria- 
expanded="false"><option value="zztextsearchyy" selected="SELECTED" role="option">for text</option> 
<option value="number" role="option">Number</option><option value="opened_at" 
role="option">Opened</option><option value="short_description" role="option">Short 
description</option><option value="caller_id" role="option">Caller</option><option value="priority" 
role="option">Priority</option><option value="state" role="option">State</option><option 
value="category" role="option">Category</option><option value="assignment_group" 
role="option">Assignment group</option><option value="assigned_to" role="option">Assigned to</option> 
<option value="sys_updated_on" role="option">Updated</option><option value="sys_updated_by" 
role="option">Updated by</option></select>

通过xpath：

//*[@id="d5f43fd407945410af12f2ae7c1ed05c_select"]

给我以下错误：

DevTools listening on ws://127.0.0.1:49915/devtools/browser/30b98d3d-0779-4d85-86bc-9af3a24726a2
[7012:3772:0417/104241.308:ERROR:browser_switcher_service.cc(238)] XXX Init()
Traceback (most recent call last):
  File "Test.py", line 39, in <module>
    element = driver.find_element_by_class_name('form-control default-focus-outline')
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 564, in 
find_element_by_class_name
    return self.find_element(by=By.CLASS_NAME, value=name)
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 976, in 
find_element
return self.execute(Command.FIND_ELEMENT, {
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
  File "C:\Python38\Lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in 
check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate 
element: {"method":"css selector","selector":".form-control default-focus-outline"}
  (Session info: chrome=81.0.4044.113)

以上消息有两个不同的错误：

1）[7012：3772：0417 / 104241.308：ERROR：browser_switcher_service.cc（238）]XXX Init（）

2）找不到元素：{“方法”：“ css选择器”，“选择器”：“。form-control default-focus-outline”}

需要有关如何解决这些问题的帮助。

Answer 1

尝试使用WebDriverWait解决您的问题。如果您仍然遇到问题，请检查iframe中是否存在您的元素

wait = WebDriverWait(driver, 30)
wait.until(EC.element_to_be_clickable((By.XPATH, "//select[@id='form-control default-focus-outline']/option[text()='Short description']")))

注意：请在解决方案中添加以下内容

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