Python Selenium：get_elements 方法无法获取 ul 中的 li 项

Question

我正在尝试在 ul 中获取 li 项目。这是我的代码：

driver.get('https://migroskurumsal.com/magazalarimiz/')

try:
    select = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, 'stores'))
    )
    print('Dropdown is ready!')
except TimeoutException:
    print('Took too much time!')

select = Select(driver.find_element(By.ID,'stores'))

select.select_by_value('2')

try:
    shopList = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "shopList"))
    )
    print('Shoplist is ready!')
except TimeoutException:
    print('Took too much time!')
    driver.quit()


print(shopList.get_attribute("class"))


li_items = shopList.find_elements(By.TAG_NAME,'li')

print(len(li_items))

我成功找到了 id=shopList 的 ul 元素。然后我尝试使用 find_elements(By.TAG_NAME) 获取 ul 下的所有 li 元素。我还尝试了 find_elements(By.CLASS_NAME)，但是 len(li_items) 始终为 0。我请求您的帮助。谢谢。

Answer 1

在您的情况下，等到EC.presence_of_element_located((By.ID, "shopList")) 不会成功，因为这个ul 已经在页面上，即使在选择过滤器之前，它也是空的。相反，您可以等到li 子元素可见。

例子：

driver.get('https://migroskurumsal.com/magazalarimiz/')

try:
    select = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, 'stores'))
    )
    print('Dropdown is ready!')
except TimeoutException:
    print('Took too much time!')

select = Select(driver.find_element(By.ID, 'stores'))

select.select_by_value('2')
shopList = driver.find_element(By.ID, "shopList")
try:
    WebDriverWait(driver, 10).until(
        EC.visibility_of_all_elements_located((By.XPATH, "//ul[@id='shopList']/li"))
    )
    print('Shoplist is ready!')
except TimeoutException:
    print('Took too much time!')
    driver.quit()

print(shopList.get_attribute("class"))

li_items = shopList.find_elements(By.TAG_NAME, 'li')

print(len(li_items))

输出结果：

Dropdown is ready!
Shoplist is ready!
shop-list list-unstyled
601