I have got all the image tags by
image_tags = driver.find_elements_by_xpath('//img')
however, the src of the images needs some time to change to the format of 'https://....'. So here is what I got now
for image_tag in image_tags:
WebDriverWait(driver, 60).until(** this image's src contains 'http' **) # how to write this part?
url = image_tag.get_attribute('src') # get the real url address
Thanks!