把wd.find_element(By.CSS_SELECTOR,‘.frozen-table’)放在while循环中，如果不存在就循环等待，如果存在就跳出循环

当你想在Python的Selenium库中通过CSS选择器定位元素，并希望在该元素未出现在页面上时持续查找直到找到为止，可以使用`WebDriverWait`配合`expected_conditions`模块实现这一功能。这里是一个示例：

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

# 定义要查找的CSS选择器
css_selector = '.frozen-table'

# 设置等待时间，例如5秒
wait_time = 5
max_attempts = 10  # 设置最大尝试次数

element = None
for _ in range(max_attempts):
    try:
        element = WebDriverWait(driver, wait_time).until(
            EC.presence_of_element_located((By.CSS_SELECTOR, css_selector))
        )
        break  # 如果元素存在，跳出循环
    except TimeoutException:
        print(f"Element not found after {wait_time} seconds, retrying...")

if element is not None:
    # 成功找到元素后，进行后续操作...
else:
    print("Element was not found after multiple attempts.")