Continuous scraping (each second) of dynamic webpage with selenium

Question

I am scraping website with selenium successfully using following code:

import os
import time
from selenium import webdriver
from selenium.webdriver.common.by import By

driver = webdriver.Safari()
driver.get("http://10.26.210.148/?page=startpage_multi.html&content=false&lang=cs")
time.sleep(2)
power = driver.find_element(By.ID, "thumb_power_value").get_attribute("innerHTML")
print(power)

I am getting current value of power. I need to scrape each second for the whole week and record the data to excel file.

Could you please guide me on how to do that?