[英]Selenium(PYTHON) check whether or not element exists
所以我试图弄清楚如何正确运行这个循环,我的问题是,根据正在加载的链接,加载的页面会有访问被拒绝错误,这不是所有链接都这样,我的问题是我想确定当特定元素加载到我的屏幕上时,程序是否识别它并中断循环,并在 for 循环中开始下一次迭代,所以我试图确定“拒绝访问”元素是否存在,如果是则break,否则继续for循环
idList = ["8573", "85678", "2378", "2579"]
for ID in idList:
print(ID)
driver.get(f"https://www.someWebsite/username/{ID}")
element = driver.find_element_by_class_name("Access-Denied")
print("error loading website")
break
if not element:
print("you may continue the for loop")
请注意,如果显示拒绝访问页面的元素不存在,我收到“拒绝访问”元素不存在的错误,我该如何解决?
您想等待网页收到正确的响应。 使用以下代码,您可以等待加载的完整响应,然后根据结果采取适当的措施:
from selenium.webdriver.common.by import By
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support.ui import WebDriverWait
...
try:
_ = WebDriverWait(driver, 10).until(
EC.presence_of_element_located((By.CLASS_NAME, "Access-Denied"))
)
print("error loading website")
break
except TimeoutException:
print("you may continue the for loop")
...
因此,如果访问被拒绝,那么您想循环访问然后中断。
wait = WebDriverWait(driver, 10)
idList = ["8573", "85678", "2378", "2579"]
for ID in idList:
print(ID)
driver.get(f"https://www.someWebsite/username/{ID}")
try:
element=wait.until(EC.presence_of_element_located((By.CLASS_NAME, 'Access-Denied')))
break
except:
continue
进口
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
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