urllib2

python2 "from urllib import quote" 对应 python3 "from urllib import parse" urillb2在python3中的变化。 在Pytho2.x中使用import urllib2——-对应的，在Python3.x中会使用import urllib.request，urllib.error。 在Pytho2.x中使用import urllib——-对应的，在Python3.x中会使用import urllib.request，urllib.error，urllib.parse 在Pytho2.x中使用import urlparse——-对应的，在Python3.x中会使用import urllib.parse。 在Pytho2.x中使用import urlopen——-对应的，在Python3.x中会使用import urllib.request.urlopen。 在Pytho2.x中使用import urlencode——-对应的，在Python3.x中会使用import urllib.parse.urlencode。 在Pytho2.x中使用import urllib.quote——-对应的，在Python3.x中会使用import urllib.request.quote。 在Pytho2.x中使用cookielib

How to implement a controlling for urlllib2.urlopen in Python ? I just wanna monitor that if in 5 seconds no xml data return, cut this connection and connect again? Should I use some timer? thx urllib2.urlopen("http://www.example.com", timeout=5) From the urllib2 documentation ... The optional timeout parameter specifies a timeout in seconds for blocking operations like the connection attempt (if not specified, the global default timeout setting will be used). This actually only works for HTTP, HTTPS and FTP connections. 来源： https://stackoverflow.com/questions/16018007/how-to-implement-a

前言 文的文字及图片来源于网络,仅供学习、交流使用,不具有任何商业用途,版权归原作者所有,如有问题请及时联系我们以作处理。 作者： Eastmount PS：如有需要Python学习资料的小伙伴可以加点击下方链接自行获取 http://note.youdao.com/noteshare?id=3054cce4add8a909e784ad934f956cef 我们在编写Python爬虫时，有时会遇到网站拒绝访问等反爬手段，比如这么我们想爬取蚂蚁短租数据，它则会提示“当前访问疑似黑客攻击，已被网站管理员设置为拦截”提示，如下图所示。此时我们需要采用设置Cookie来进行爬取，下面我们进行详细介绍。非常感谢我的学生承峰提供的思想，后浪推前浪啊！ 一. 网站分析与爬虫拦截 当我们打开蚂蚁短租搜索贵阳市，反馈如下图所示结果。 我们可以看到短租房信息呈现一定规律分布，如下图所示，这也是我们要爬取的信息。 通过浏览器审查元素，我们可以看到需要爬取每条租房信息都位于 <dd> </dd> 节点下。 在定位房屋名称，如下图所示，位于 <div class="room-detail clearfloat"> </div> 节点下。 接下来我们写个简单的BeautifulSoup进行爬取。 1 # -*- coding: utf-8 -*- 2 import urllib 3 import re 4

I am a python beginner. I am using urllib2 to download files. When I download a file, I specify a filename to with which to save the downloaded file on my hard drive. However, if I download the file using my browser, a default filename is automatically provided. Here is a simplified version of my code: def downloadmp3(url): webFile = urllib2.urlopen(url) filename = 'temp.zip' localFile = open(filename, 'w') localFile.write(webFile.read()) The file downloads just fine, but if I type the string stored in the variable "url" into my browser, there is a default filename given to the file when I

So, I want to use Kenneth' excellent requests module . Stumbled up this problem while trying to use the Freebase API . Basically, their API looks like that: https://www.googleapis.com/freebase/v1/mqlread?query=... as a query, they expect a JSON object, here's one that will return a list of wines with their country and percentage of alcohol : [{ "country": null, "name": null, "percentage_alcohol": null, "percentage_alcohol>": 0, "type": "/food/wine" }]​ Of course, we'll have to escape the hell out of this before passing it to an URL, so the actual query will look like this: fullurl = 'https:/

There is a need to do a search on the website url = r'http://www.cpso.on.ca/docsearch/' this is an aspx page (I'm beginning this trek as of yesterday, sorry for noob questions) using BeautifulSoup, I can get the __VIEWSTATE and __EVENTVALIDATION like this: viewstate = soup.find('input', {'id' : '__VIEWSTATE'})['value'] eventval = soup.find('input', {'id' : '__EVENTVALIDATION'})['value'] and the header can be set like this: headers = {'HTTP_USER_AGENT': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.13) Gecko/2009073022 Firefox/3.0.13', 'HTTP_ACCEPT': 'text/html,application/xhtml+xml

I need to use urllib2 with BeautifulSoup. I found the download file for BeautifulSoup and installed it, however, I couldn't find any download files for urllib2, is there another way to intall that module? The module comes with Python, simply import it: import urllib2 If you're using Python3, the urllib was replaced by urllib.request . The Urllib PEP (Python3): http://www.python.org/dev/peps/pep-3108/#urllib-package . 来源： https://stackoverflow.com/questions/16597865/is-there-a-library-for-urllib2-for-python-which-we-can-download