如果页面上不存在元素，则跳过项目

Question

这是我的整个代码。response = requests.get("https://www.zomato.com/san-francisco/restaurants?q=restaurants&page=" + str(i),headers=headers)content = response.contentbs = BeautifulSoup(content, "html.parser")zomato_containers = bs.find_all("div", {"class": "search-snippet-card"})for zomato_container in zomato_containers:    title = zomato_container.find("a", {"class": "result-title"}).get_text()    numVotes = zomato_container.select_one('[class^=rating-votes-div]').text      numVotes = numVotes[1] if len(numVotes) > 1 else numVotes[0]    print("restaurant_title: ", title)    print("numVotes: ", numVotes)我收到一个错误：“numVotes = zomato_container.select_one('[class^=rating-votes-div]').text AttributeError: 'NoneType' 对象没有属性 'text'”我非常肯定这是因为页面上的某些元素不存在。我试图跳过这些元素，但无法弄清楚如何。非常感谢。我非常感激。

Answer 1

最简单的方法是：

for zomato_container in zomato_containers:

    title = zomato_container.find("a", {"class": "result-title"}).get_text()

    try:

        numVotes = zomato_container.select_one('[class^=rating-votes-div]').text  

        numVotes = numVotes[1] if len(numVotes) > 1 else numVotes[0]

    except AttributeError:

        continue

    print("restaurant_title: ", title)

    print("numVotes: ", numVotes)

Answer 2

您可以在尝试访问text属性之前测试变量是否为 None

import requests

from bs4 import BeautifulSoup as bs

i = 1

headers = {'User-Agent': 'Mozilla/5.0'}

response = requests.get("https://www.zomato.com/san-francisco/restaurants?q=restaurants&page=" + str(i),headers=headers)

content = response.content

soup = bs(content, "html.parser")

zomato_containers = soup.select('.search-snippet-card')

for zomato_container in zomato_containers:

    title = zomato_container.find("a", {"class": "result-title"}).get_text()

    numVotes = zomato_container.select_one('[class^=rating-votes-div]')

    if numVotes is None:

        numVotes = 'N/A'

    else:

        numVotes = numVotes.text.strip()

    print("restaurant_title: ", title)

    print("numVotes: ", numVotes)