Python 3 – セレンはページがロードされるのを待つ

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

driver = webdriver.Firefox()
driver.get('https://pythonbasics.org')
timeout = 3
try:
    element_present = EC.presence_of_element_located((By.ID, 'main'))
    WebDriverWait(driver, timeout).until(element_present)
except TimeoutException:
    print("Timed out waiting for page to load")
finally:
    print("Page loaded")