1

I'm new about using python and selenium and I'm trying to get the image source from a website. I'm actually finding elements by the tag name, but I don't know if it's the right way. Anyway it gives me an error:

InvalidArgumentException: Message: invalid argument: 'using' must be a string

Under this there's the code I wrote

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from webdriver_manager.chrome import ChromeDriverManager

PATH = Service("/Users/fscozano/documenti/chromedriver-2.exe")

print("setup")
driver = webdriver.Chrome(service=Service(ChromeDriverManager().install()))
driver.get("https://apod.nasa.gov/apod/random_apod.html")

tag = driver.find_element((By.TAG_NAME, "b")).getText()

print(tag)

driver.quit()

The error is in:

tag = driver.find_element((By.TAG_NAME, "b")).getText()

You can personally inspect the website because I really don't know how to solve this Every type of help is appreciated :)

undetected Selenium
  • 183,867
  • 41
  • 278
  • 352
Francesco Zanoncelli
  • 83
  • 6

1 Answers1

1

The image source is within an <iframe> so you have to:

  • Induce WebDriverWait for the desired frame to be available and switch to it.

  • Induce WebDriverWait for the desired element to be clickable.

  • You can use the following Locator Strategies:

    driver.get("https://apod.nasa.gov/apod/random_apod.html")
WebDriverWait(driver, 20).until(EC.frame_to_be_available_and_switch_to_it((By.CSS_SELECTOR,"iframe[src^='https://apod.nasa.gov/apod']")))
print(WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.XPATH, "//h1[normalize-space()='Astronomy Picture of the Day']//following::p[2]//a/img"))).get_attribute("src"))

  • Console Output:

    https://apod.nasa.gov/apod/image/2111/MACSJ0138_Hubble_1080.jpg

  • 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

Reference

You can find a couple of relevant discussions in:

undetected Selenium
  • 183,867
  • 41
  • 278
  • 352