硒-如何知道下一页是否不存在?

我想知道 下一页是否存在 . 所以,我可以打破这个循环。或者让我的循环保持这么多迭代。

这是我的密码:

import time
from selenium import webdriver
from selenium.common.exceptions import NoSuchElementException

def writefile(links):
    with open('url_list.txt', 'w') as file:
        file.writelines("%s\n" % link for link in links)

start_url = "https://www.ibm.com/us-en/products/categories?size=30&selectedTopicRoot=technologyTopics&types[0]=service"
links = []
chrome_path = r"C:\Users\IBM_ADMIN\Anaconda3\selenium\webdriver\Chrome\chromedriver.exe"
driver = webdriver.Chrome(chrome_path)
driver.get(start_url)
time.sleep(15)

while True:
    time.sleep(5)
    results = driver.find_elements_by_class_name("offering--name")

    for i in range(len(results)):
        links.append(results[i].text)

    writefile(links)

    try:
        next = driver.find_element_by_xpath('//*[@id="IBMAccessibleItemComponents-next"]')
        if (next.is_enabled()):
            next.click()
        else:
            break
    except NoSuchElementException:
        break

driver.close()