How to wait until the src attribute is defined using Selenium and Python

Question

I write a program with selenium in python. My goal is to find the src of the video in the page. This is my code

video_element = chrome_driver.find_element_by_tag_name("video")
video_src = video_element.get_attribute("src")

When I try to check video_src I get an empty string, however if I put time.sleep(1) before I try to acquire the src I get the real link to the video. I have tried to use WebDriverWait instead of time.wait like so

video_element = WebDriverWait(chrome_driver, 3).until(
            expected_conditions.element_to_be_clickable((By.TAG_NAME, "video"))
        )

But I couldn't find any condition that waits until the src tag is filled with the real link. Is there a way to wait with selenium instead of time? (with time it is not guarantee that the src will be filled)

Answer 1

Please try below solution before that you have to switch to iframe

from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait as Wait
from selenium.webdriver.support.ui import WebDriverWait
from selenium import webdriver
driver = webdriver.Chrome(executable_path=r"C:\New folder\chromedriver.exe")
driver.get('https://www.thewatchcartoononline.tv/www-working-episode-1-english-subbed')
driver.switch_to.frame("anime-js-0")
video_element = WebDriverWait(driver, 3).until(EC.visibility_of_element_located((By.ID, "video-js_html5_api")))
val = video_element.get_attribute("src")
print val

Output:

Answer 2

You can try with the below.

video_element = WebDriverWait(chrome_driver, 3).until(
            expected_conditions.presence_of_element_located((By.XPATH, "//video[not(@src='')]"))
        )

Answer 3

To extract the value of the src attribute you have to induce WebDriverWait for the desired visibility_of_element_located() and you can use either of the following Locator Strategies:

• Using CSS_SELECTOR:

  print(WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.TAG_NAME, "video"))).get_attribute("innerHTML"))
  

• Using XPATH:

  print(WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.XPATH, "//video"))).get_attribute("src"))
  

• Note : You have to add the following imports :

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