如何使用python selenium检查元素中是否存在文本?

我能够使用Python和Selenium找到网页的元素?是否有一种方法可以找到同一元素中是否存在特定文本。

下面是我的代码:

import datetime, time
from selenium import webdriver
from pathlib import Path

options = webdriver.ChromeOptions()
driver = webdriver.Chrome(executable_path=r'C:\chromedriver_win32\chromedriver.exe', chrome_options=options)
driver.implicitly_wait(30)
today = time.strftime("%d/%m/%Y")
print(today)
driver.get("http://mylink.com")
uname = driver.find_element_by_name("UserName")
pwd = driver.find_element_by_name("Password")
uname.send_keys("@.com")
pwd.send_keys("pwd")
driver.find_element_by_xpath('//*[@id="submitButton"]').click()

time.sleep(30)

element=driver.find_element_by_xpath('//*[@id="block-system-main"]/div/div/div/div[3]/div/div/div[2]/div/div[2]/table/tbody/tr[1]/td[6]/span/font/font')

贝洛斯是我得到的错误。

 selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//*[@id="block-system-main"]/div/div/div/div[3]/div/div/div[2]/div/div[2]/table/tbody/tr[1]/td[6]/span/font/font"}