有没有一种简单的方法可以在python中请求URL而不遵循重定向？

查看urllib2的源代码，看起来最简单的方法是将HTTPRedirectHandler子类化，然后使用build_opener覆盖默认的HTTPRedirectHandler，但这似乎需要很多（相对复杂的）工作来完成应有的工作很简单。

这是请求的方式：

import requests
r = requests.get('http://github.com', allow_redirects=False)
print(r.status_code, r.headers['Location'])

Dive Into Python有很好的章节介绍如何使用urllib2进行重定向。另一个解决方案是httplib。

>>> import httplib
>>> conn = httplib.HTTPConnection("www.bogosoft.com")
>>> conn.request("GET", "")
>>> r1 = conn.getresponse()
>>> print r1.status, r1.reason
301 Moved Permanently
>>> print r1.getheader('Location')
http://www.bogosoft.com/new/location

这是一个不会跟随重定向的urllib2处理程序：

class NoRedirectHandler(urllib2.HTTPRedirectHandler):
    def http_error_302(self, req, fp, code, msg, headers):
        infourl = urllib.addinfourl(fp, headers, req.get_full_url())
        infourl.status = code
        infourl.code = code
        return infourl
    http_error_300 = http_error_302
    http_error_301 = http_error_302
    http_error_303 = http_error_302
    http_error_307 = http_error_302

opener = urllib2.build_opener(NoRedirectHandler())
urllib2.install_opener(opener)

request方法中的redirections关键字httplib2是红色鲱鱼。RedirectLimit如果收到重定向状态代码，它将引发异常，而不是返回第一个请求。要返回初始响应，您需要在对象上设置follow_redirects为：FalseHttp

import httplib2
h = httplib2.Http()
h.follow_redirects = False
(response, body) = h.request("http://example.com")

我想这会有所帮助

from httplib2 import Http
def get_html(uri,num_redirections=0): # put it as 0 for not to follow redirects
conn = Http()
return conn.request(uri,redirections=num_redirections)

我仅次于olt的Dive into Python指针。这是一个使用urllib2重定向处理程序的实现，比应做的工作还要多？也许，耸耸肩。

import sys
import urllib2

class RedirectHandler(urllib2.HTTPRedirectHandler):
    def http_error_301(self, req, fp, code, msg, headers):  
        result = urllib2.HTTPRedirectHandler.http_error_301( 
            self, req, fp, code, msg, headers)              
        result.status = code                                 
        raise Exception("Permanent Redirect: %s" % 301)

    def http_error_302(self, req, fp, code, msg, headers):
        result = urllib2.HTTPRedirectHandler.http_error_302(
            self, req, fp, code, msg, headers)              
        result.status = code                                
        raise Exception("Temporary Redirect: %s" % 302)

def main(script_name, url):
   opener = urllib2.build_opener(RedirectHandler)
   urllib2.install_opener(opener)
   print urllib2.urlopen(url).read()

if __name__ == "__main__":
    main(*sys.argv) 

但是最短的方法是

class NoRedirect(urllib2.HTTPRedirectHandler):
    def redirect_request(self, req, fp, code, msg, hdrs, newurl):
        pass

noredir_opener = urllib2.build_opener(NoRedirect())