import time 
import sys 
from selenium.common import TimeoutException, InvalidSessionIdException, WebDriverException 
from selenium.webdriver.support import expected_conditions as EC 
from selenium import webdriver 
from selenium.webdriver.common.by import By 
from selenium.webdriver.common.keys import Keys 
from selenium.webdriver.support.wait import WebDriverWait 
import pandas as pd 
初始化浏览器
opt...