等待Python中出现元素

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

# 创建浏览器实例
driver = webdriver.Chrome()

# 打开网页
driver.get("https://example.com")

# 等待元素出现
wait = WebDriverWait(driver, 10)
element = wait.until(EC.presence_of_element_located((By.ID, "element_id")))

# 对元素进行操作
element.click()

# 关闭浏览器
driver.quit()

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

# 创建浏览器实例
driver = webdriver.Chrome()

# 打开网页
driver.get("https://example.com")

# 设置最大等待时间
max_wait_time = 10
start_time = time.time()

# 循环等待元素出现
while time.time() - start_time < max_wait_time:
    try:
        element = driver.find_element_by_id("element_id")
        break
    except NoSuchElementException:
        time.sleep(1)

# 对元素进行操作
element.click()

# 关闭浏览器
driver.quit()