Python + Selenium：WebDriverWait调用超时后重新加载页面

Question

我正在寻找在下面的Python Selenium中实现的正确方法

1. 加载页面
2. 等待一段时间（例如30秒）以使按钮可单击（通过调用WebDriverWait）
3. 如果收到TimeoutException，请重新加载页面，即转到步骤1）

url = 'https://...'
driver = webdriver.Chrome('./chromedriver')

try:
    driver.get(url)
    wait = WebDriverWait(driver, 30)
    element = wait.until(EC.element_to_be_clickable((By.CLASS_NAME,'button')))
except TimeoutException as e: 
    <reload the url again>

Answer 1

您可以创建一个函数，如果未找到该元素，将自动通过刷新调用。

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

driver = webdriver.Chrome(executable_path =os.path.abspath(os.getcwd()) + "/chromedriver")
driver.get("https://selenium-python.readthedocs.io/waits.html")


def refresh():
    try:
        element = WebDriverWait(driver, 10).until(
            EC.presence_of_element_located((By.CLASS_NAME, "button"))
        )
    except:
        driver.refresh()
        refresh()


refresh()

Answer 2

您可以在Dom中以explicit wait为button的形式获取具有class name的元素的列表。如果元素列表为空，则可以刷新页面。

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

url = 'https://...'
driver = webdriver.Chrome('./chromedriver')
driver.get(url)
wait = WebDriverWait(driver, 30)

if  len(wait.until(EC.presence_of_all_elements_located((By.CLASS_NAME,'button'))))==0 :
  driver.refresh()

Answer 3

要执行以下任务：

1. 加载页面
2. 等待一段时间（例如30秒）以使按钮可单击（通过调用WebDriverWait）
3. 如果收到TimeoutException，请重新加载页面，即转到步骤1）

您可以使用以下Locator Strategy。为了演示，我将考虑一个在Google Search Home Page中不可用的元素：

• 代码块：

  from selenium import webdriver
  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support import expected_conditions as EC
  
  options = webdriver.ChromeOptions() 
  options.add_argument("start-maximized")
  options.add_experimental_option("excludeSwitches", ["enable-automation"])
  options.add_experimental_option('useAutomationExtension', False)
  driver = webdriver.Chrome(options=options, executable_path=r'C:\WebDrivers\chromedriver.exe')
  while True:
      try:
          driver.get("https://www.google.com/")
          WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.NAME, "kokei")))
          print("Button found")
          break
      except TimeoutException:
          print("Button not found ... reloading page")
          continue
  # perform your remaining steps here on successfully finding the clickable element
  driver.quit()
  

• 控制台输出：

  Button not found ... reloading page
  Button not found ... reloading page
  Button not found ... reloading page