在 selenium 中找不到任何元素

Question

请耐心等待这是我的第一个真正的项目，我正在尝试在 Python 和 Selenium 的帮助下编写一个自动化的 Amazon.com 结帐。

目前最大的问题是 webdriver 似乎无法在定义的产品页面上找到“立即购买”和“确认结帐”按钮。 我尝试了不同的方法（使用 XPATH、CSSSELECTOR 和 NAME），但没有一个有效。

有人给我小费吗？ 请在上面找到我的代码：

# This count variable is used to check if the product has been bought, if yes it will be 1.
count = 0
page_refreshed = 1
# This while loop is used to check for the "Buy Now" button until it is enabled by Amazon.
while count<= 1:

    # This try statement used to click on the "Buy now" Button and click the "Submit Order" Button on the following page
    try:
        buy_now = driver.find_element_by_css_selector('#buy-now-button')
        buy_now.click()
        driver.implicitly_wait(8)
        buy = driver.find_element_by_css_selector('#bottomSubmitOrderButtonId > span > input')
        buy.click()
        count += 2
        print("Buttons clicked! The item has been bought!");print()
    # This except statement used to reload the page every second until the add to cart option is enabled
    except:
        if count <= 1:
            print("Button not appeared, reloading...page reloaded "+str(page_refreshed)+" times!")
            driver.refresh()
            page_refreshed += 1
        pass

Answer 1

由于页面刷新，第一个元素可能不会出现尝试使用 Webdriver 等待以允许页面加载。

buy_now = driver.find_element_by_css_selector('#buy-now-button')

用。。。来代替

buy_now=WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#buy-now-button")))

进口

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