如何使用 selenium 从 html 中提取列表，然后在 python 脚本中使用它来查找元素

Question

我正在尝试使用 selenium 和 python 从网页中提取列表。我需要将其作为列表导入，以便稍后使用 python 代码在该列表中查找元素。

这是它在网页中的存储方式：

...<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">

这就是我尝试提取的方式（我是 python 中的超级初学者）：

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

Answer 1

榜单：

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

是<input>标签的value属性的值并且是隐藏。要提取列表，您需要引入 for the presence_of_element_located() and you can use either of the following :

使用NAME:

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

使用CSS_SELECTOR:

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

使用XPATH:

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

注意：您必须添加以下导入：

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

Answer 2

你应该使用get_attribute函数

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

如何使用 selenium 从 html 中提取列表，然后在 python 脚本中使用它来查找元素

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

python

selenium

hidden

selenium-webdriver

webdriverwait