网页抓取导致 403 禁止错误

Question

我正在尝试使用 BeautifulSoup 从 SeekingAlpha 获取每家公司的收益。但是，该网站似乎检测到正在使用网络抓取工具？我收到“HTTP 错误 403：禁止”

我试图抓取的页面是：https://seekingalpha.com/symbol/AMAT/earnings

有谁知道可以做些什么来绕过这个？

Answer 1

您应该尝试将User-Agent 设置为请求标头之一。值可以是任何已知的浏览器。

例子：

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Answer 2

我能够使用代理访问网站内容，从这里找到：

https://free-proxy-list.net/

然后，使用requests 模块创建一个播放负载，您可以抓取该站点：

import requests
import re
from bs4 import BeautifulSoup as soup
r = requests.get('https://seekingalpha.com/symbol/AMAT/earnings', proxies={'http':'50.207.31.221:80'}).text
results = re.findall('Revenue of \$[a-zA-Z0-9\.]+', r)
s = soup(r, 'lxml')
titles = list(map(lambda x:x.text, s.find_all('span', {'class':'title-period'})))
epas = list(map(lambda x:x.text, s.find_all('span', {'class':'eps'})))
deciding = list(map(lambda x:x.text, s.find_all('span', {'class':re.compile('green|red')})))
results = list(map(list, zip(titles, epas, results, epas)))

输出：

[[u'Q4: 11-16-17', u'EPS of $0.93 beat by $0.02', u'Revenue of $3.97B', u'EPS of $0.93 beat by $0.02'], [u'Q3: 08-17-17', u'EPS of $0.86 beat by $0.02', u'Revenue of $3.74B', u'EPS of $0.86 beat by $0.02'], [u'Q2: 05-18-17', u'EPS of $0.79 beat by $0.03', u'Revenue of $3.55B', u'EPS of $0.79 beat by $0.03'], [u'Q1: 02-15-17', u'EPS of $0.67 beat by $0.01', u'Revenue of $3.28B', u'EPS of $0.67 beat by $0.01'], [u'Q4: 11-17-16', u'EPS of $0.66 beat by $0.01', u'Revenue of $3.30B', u'EPS of $0.66 beat by $0.01'], [u'Q3: 08-18-16', u'EPS of $0.50 beat by $0.02', u'Revenue of $2.82B', u'EPS of $0.50 beat by $0.02'], [u'Q2: 05-19-16', u'EPS of $0.34 beat by $0.02', u'Revenue of $2.45B', u'EPS of $0.34 beat by $0.02'], [u'Q1: 02-18-16', u'EPS of $0.26 beat by $0.01', u'Revenue of $2.26B', u'EPS of $0.26 beat by $0.01'], [u'Q4: 11-12-15', u'EPS of $0.29  in-line ', u'Revenue of $2.37B', u'EPS of $0.29  in-line '], [u'Q3: 08-13-15', u'EPS of $0.33  in-line ', u'Revenue of $2.49B', u'EPS of $0.33  in-line '], [u'Q2: 05-14-15', u'EPS of $0.29 beat by $0.01', u'Revenue of $2.44B', u'EPS of $0.29 beat by $0.01'], [u'Q1: 02-11-15', u'EPS of $0.27  in-line ', u'Revenue of $2.36B', u'EPS of $0.27  in-line '], [u'Q4: 11-13-14', u'EPS of $0.27  in-line ', u'Revenue of $2.26B', u'EPS of $0.27  in-line '], [u'Q3: 08-14-14', u'EPS of $0.28 beat by $0.01', u'Revenue of $2.27B', u'EPS of $0.28 beat by $0.01'], [u'Q2: 05-15-14', u'EPS of $0.28  in-line ', u'Revenue of $2.35B', u'EPS of $0.28  in-line '], [u'Q1: 02-11-14', u'EPS of $0.23 beat by $0.01', u'Revenue of $2.19B', u'EPS of $0.23 beat by $0.01']]

Answer 3

对于任何使用 PyQuery 的人：

from pyquery import PyQuery as pq
import requests


page = pq('https://seekingalpha.com/article/4151372-tesla-fools-media-model-s-model-x-demand', proxies={'http':'34.231.147.235:8080'})
print(page)

• （使用来自https://free-proxy-list.net/的代理信息）
• 确保您使用的是 Requests 库而不是 Urllib。不要尝试使用“urlopen”加载页面。