How to extract a list from html with selenium and then use it in python script to find elements

Question

Im trying to extract a list from webpage using selenium and python. I need to import it as list in order to find elements inside that list later using python code.

this is how its stored in the webpage:

...<input type="hidden" name="GridContainerDataV" value="[["7131090","Arvejas, Enteras Verdes","400","",""],["71311099","Arvejas, Enteras Azules","520","abril/2021","mayo/2021"],["71311100","lo que sea","720","junio/2021","diciembre/2021"],...]]" autocomplete="off">

This is how I tried to extracted (Im super begginer in python):

try:
    tabla = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.NAME, "GridContainerDataV")))
    print(tabla.value)

Answer 1

The list:

[["7131090","Arvejas, Enteras Verdes","400","",""],["71311099","Arvejas, Enteras Azules","520","abril/2021","mayo/2021"],["71311100","lo que sea","720","junio/2021","diciembre/2021"],...]]

is the value of the value attribute of the <input> tag and is hidden. To extract the list you need to induce WebDriverWait for the presence_of_element_located() and you can use either of the following Locator Strategies:

• Using NAME:

  print(WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.NAME, "GridContainerDataV"))).get_attribute("value"))
  

• Using CSS_SELECTOR:

  print(WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.CSS_SELECTOR, "input[name='GridContainerDataV']"))).get_attribute("value"))
  

• Using XPATH:

  print(WebDriverWait(driver, 20).until(EC.presence_of_element_located((By.XPATH, "//input[@name='GridContainerDataV']"))).get_attribute("value"))
  

• 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