从 urlReq(url) 中删除'urllib.error.HTTPError: HTTP Error 302:'

嘿伙计们怎么了？:)
我正在尝试使用一些网址参数抓取网站。如果我使用 url1、url2、url3，它可以正常工作，它会打印我想要的常规输出 (html( ->

import bs4
from urllib.request import urlopen as urlReq
from bs4 import BeautifulSoup as soup
# create urls
url1 = 'https://en.titolo.ch/sale'
url2 = 'https://en.titolo.ch/sale?limit=108'
url3 = 'https://en.titolo.ch/sale?category_styles=29838_21212'
url4 = 'https://en.titolo.ch/sale?category_styles=31066&limit=108'
# opening up connection on each url, grabbing the page
uClient = urlReq(url4)
page_html = uClient.read()
uClient.close()
# parsing the downloaded html
page_soup = soup(page_html, "html.parser")
# print the html
print(page_soup.body.prettify())

->但是当我尝试"url4">时url4 = 'https://en.titolo.ch/sale?category_styles=31066&limit=108'它给了我下面的错误。我做错了什么？
- 也许它与饼干有关？-> 但是为什么它适用于其他网址...
- 也许他们只是在阻止刮擦尝试？
- 如何在 URL 中使用多个参数来避免此错误？

urllib.error.HTTPError: HTTP Error 302: The HTTP server returned a redirect error that would lead to an infinite loop.
The last 30x error message was:
Moved Temporarily

提前感谢您的帮助！干杯艾伦

我已经尝试过：我尝试了请求库

import requests
url = 'https://en.titolo.ch/sale?category_styles=31066&limit=108'
r = requests.get(url)
html = r.text
print(html)
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access /sale
on this server.</p>
</body></html>
[Finished in 0.375s]

来自 urllib 请求的完整错误消息：

Traceback (most recent call last):
  File "C:UsersjediDocumentsnonofyourbusinesssmilestackoverflow_question", line 12, in <module>
    uClient = urlReq(url4)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 531, in open
    response = meth(req, response)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 563, in error
    result = self._call_chain(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 503, in _call_chain
    result = func(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 531, in open
    response = meth(req, response)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 563, in error
    result = self._call_chain(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 503, in _call_chain
    result = func(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 531, in open
    response = meth(req, response)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 563, in error
    result = self._call_chain(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 503, in _call_chain
    result = func(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 531, in open
    response = meth(req, response)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 563, in error
    result = self._call_chain(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 503, in _call_chain
    result = func(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 531, in open
    response = meth(req, response)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 563, in error
    result = self._call_chain(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 503, in _call_chain
    result = func(*args)
  File "C:UsersjediAppDataLocalProgramsPythonPython37liburllibrequest.py", line 745, in http_error_302
    self.inf_msg + msg, headers, fp)
urllib.error.HTTPError: HTTP Error 302: The HTTP server returned a redirect error that would lead to an infinite loop.
The last 30x error message was:
Moved Temporarily
[Finished in 2.82s]

如果使用requests包并在标头中添加用户代理，看起来它对所有 4 个链接都得到了200响应。因此，请尝试添加用户代理标头：

headers = {'User-Agent'： 'Mozilla/5.0 (Windows NT 10.0;赢64;x64( AppleWebKit/537.36 (KHTML， like Gecko( Chrome/72.0.3626.121 Safari/537.36'}

import requests
from bs4 import BeautifulSoup as soup
# create urls
url1 = 'https://en.titolo.ch/sale'
url2 = 'https://en.titolo.ch/sale?limit=108'
url3 = 'https://en.titolo.ch/sale?category_styles=29838_21212'
url4 = 'https://en.titolo.ch/sale?category_styles=31066&limit=108'
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36'}
url_list = [url1, url2, url3, url4]
for url in url_list:
# opening up connection on each url, grabbing the page
    response = requests.get(url, headers=headers)
    print (response.status_code)

输出：

所以：

import requests
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36'}
url = 'https://en.titolo.ch/sale?category_styles=31066&limit=108'
r = requests.get(url, headers=headers)
html = r.text
print(html)

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