如何使用BeautifulSoup从reddit抓取表链接

问题描述 投票:2回答:1

我正在尝试使用Beautiful Soup从Reddit表中删除链接,并且可以成功提取除URL之外的所有表的内容。我正在使用item.find_all('a'),但在使用此代码时它返回一个空列表:

import praw
import csv
import requests
from bs4 import BeautifulSoup

def Authorize():
    """Authorizes Reddit API"""
    reddit = praw.Reddit(client_id='',
                     client_secret='',
                     username='',
                     password='',
                     user_agent='user')

url = 'https://old.reddit.com/r/formattesting/comments/94nc49/will_it_work/'
headers = {'User-Agent': 'Mozilla/5.0'}
page = requests.get(url, headers=headers)

soup = BeautifulSoup(page.text, 'html.parser')

table_extract = soup.find_all('table')[0]
table_extract_items = table_extract.find_all('a')

for item in table_extract_items:
    letter_name = item.contents[0]
    links = item.find_all('a')
    print(letter_name)
    print(links)

这是它返回的内容:

6GB EVGA GTX 980 TI
[]
Intel i7-4790K
[]
Asus Z97-K Motherboard
[]
2x8 HyperX Fury DDR3 RAM
[]
Elagto HD 60 Pro Capture Card
[]

我希望有一个URL,其中空列表位于每个表行下方。

我不确定这是否会对构造产生影响,但最终目标是提取所有表内容和链接(保持两者之间的关联)并将CSV保存为两列。但是现在我只是想让print保持简单。

python python-3.x beautifulsoup
1个回答
1
投票

你快到了。你的table_extract_items是HTML锚点,你需要使用text href运算符从中提取[ - 内容和属性]。我猜变量名称选择不当让你感到困惑。 for循环links = item.find_all('a')里面的线是错误的!

这是我的解决方案:

for anchor in table.findAll('a'):
    # if not anchor: finaAll returns empty list, .find() return None
    #    continue
    href = anchor['href']    
    print (href)
    print (anchor.text)

我的代码中的table就是你在代码中命名为table_extract的东西

检查一下:

In [40]: for anchor in table.findAll('a'):
        # if not anchor:
        #        continue
        href = anchor['href']
        text = anchor.text
        print (href, "--", text)
   ....:     
https://imgur.com/a/Y1WlDiK -- 6GB EVGA GTX 980 TI
https://imgur.com/gallery/yxkPF3g -- Intel i7-4790K
https://imgur.com/gallery/nUKnya3 -- Asus Z97-K Motherboard
https://imgur.com/gallery/9YIU19P -- 2x8 HyperX Fury DDR3 RAM
https://imgur.com/gallery/pNqXC2z -- Elagto HD 60 Pro Capture Card
https://imgur.com/gallery/5K3bqMp -- Samsung EVO 250 GB SSD
https://imgur.com/FO8JoQO -- Corsair Scimtar MMO Mouse
https://imgur.com/C8PFsX0 -- Corsair K70 RGB Rapidfire Keyboard
https://imgur.com/hfCEzMA -- I messed up
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