求大神指导，我想用while True来对比时间，当时间到达时执行命令，可是不知道哪里出问题

[w446312539]

from datetime import datetime
now_time=datetime.now()
buy_time=datetime(2023,12,29,23,21,10)
from selenium import webdriver
from selenium.webdriver.common.by import By

wd=webdriver.Edge()
wd.implicitly_wait(5)

wd.get('https://www.baidu.com/')

while True:
    if now_time>=buy_time:
       wd.find_element(By.CSS_SELECTOR, '#su')
       wd.find_element(By.CSS_SELECTOR, '#su').click()
       print('一打开')
       break



print('1111')