How can I get the element by selenium?

How can i get the recaptcha data-sitekey by selenium on this websie?

https://premier.hkticketing.com/

I have try this code:

data_sitekey = WebDriverWait(driver, 5).until(EC.element_to_be_clickable((By.CLASS_NAME, "g-recaptcha"))).get_attribute("data-sitekey")
print(data_sitekey)

or

wait = WebDriverWait(driver, 5)
wait.until(EC.frame_to_be_available_and_switch_to_it((By.CLASS_NAME, "g-recaptcha")))

also return Unable to locate element How can I get the data-sitekey to bypass recaptcha?