异常捕获 计算耗时

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from time import sleep,ctime
from datetime import datetime # 获得当前的时间datetime.now()可以计算出耗时
def wait(loc):
    try:
        sta=datetime.now()
        print(f"开始找元素，当前时间{sta}")
        ele=driver.find_element(By.CSS_SELECTOR,loc)
        ele.send_keys("1")
        driver.implicitly_wait(3)
        ele.send_keys(Keys.ENTER)
    except:
        print("没找到元素")
    finally:
        end=datetime.now()
        print(f"找元素的结束时间{end}")
        t=end-sta
        print(f'找元素耗时{t}')

if __name__ == '__main__':
    driver=webdriver.Chrome()
    driver.get('https://www.baidu.com')
    loc='input#kw'
    driver.implicitly_wait(3)
    print("已经打开百度浏览器，等待3秒")
    wait(loc)
    sleep(3)
    print("回车后，等待3秒")