urllib

why is the content-lenght different in case of using requests and urlopen(url).info() >>> url = 'http://pymotw.com/2/urllib/index.html' >>> requests.head(url).headers.get('content-length', None) '8176' >>> urllib.urlopen(url).info()['content-length'] '38227' >>> len(requests.get(url).content) 38274 I was going to make a check for size of file in bytes to split the buffer to multiple threads based on Range in urllib2 but if I do not have the actual size of file in bytes it won't work.. only len(requests.get(url).content) gives 38274 which is closest but still not correct and moreover it is

urllib是python内置的HTTP请求库 包括以下模块 　　urllib.request 请求模块 　　urllib.error 异常处理模块 　　urllib.parse url解析模块 　　urllib.robotparser robots.txt解析模块 urlopen 关于urllib.request.urlopen参数的介绍： urllib.request.urlopen(url, data=None, [timeout ]) import requests import urllib.request response = urllib.request.urlopen('http://www.baidu.com') html = response.read(); html.decode('utf-8'); print(html)#打印输出百度 在某些网络情况不好或者服务器端异常的情况会出现请求慢的情况，或者请求异常，所以这个时候我们需要给 请求设置一个超时时间，而不是让程序一直在等待结果。例子如下： import urllib.request response = urllib.request.urlopen('http://httpbin.org/get', timeout=1) print(response.read())#如果时间超出，则停止 下面来进行小练习

urllib urllib模块是python3的URL处理包 其中： 1、urllib.request主要是打开和阅读urls 个人平时主要用的1： 打开对应的URL：urllib.request.open(url) 用urllib.request.build_opener([handler, ...])，来伪装成对应的浏览器 import urllib #要伪装成的浏览器(我这个是用的chrome) headers = ('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36') url='http://hotels.ctrip.com/' opener = urllib.request.build_opener() #将要伪装成的浏览器添加到对应的http头部 opener.addheaders=[headers] #读取相应的url data = opener.open(url).read() #将获得的html解码为utf-8 data=data.decode('utf-8') print(data) 2、urllib.parse主要是用来解析url 主要方法： urllib.parse

I've been trying to make a python script login to my reddit account but it doesnt seem to work, could anybody tell me whats wrong with my code? It runs fine it just doesnt login.¨ cj = http.cookiejar.CookieJar() opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj)) opener.addheaders = [('User-agent', 'Mozilla/5.0')] urllib.request.install_opener(opener) authentication_url = 'https://ssl.reddit.com/post/login' payload = { 'op': 'login', 'user_name': 'username', 'user_pass': 'password' } data = urllib.parse.urlencode(payload) binary_data = data.encode('UTF-8') req = urllib

I'm trying to use python and urllib to look at the code of a certain web page. I've tried and succeeded this at other webpages using the code: from urllib import * url = code = urlopen(url).read() print code But it returns nothing at all. My guess is it's because the page has a lot of javascripts? What to do? Niclas Nilsson Dynamic client side generated pages (JavaScript) You can not use urllib alone to see code that been rendered dynamically client side (JavaScript). The reason is that urllib only fetches the response from the server which is headers and the body (the actual code). Because of

My code belove gives me the error: socket.gaierror: [Errno 11001] getaddrinfo failed when calling the method ftp.connect(). My question is: why can I connect to google.com but when connecting to an ftp server it gives me error? And how I can connect to the ftp server from behind http proxy? import ftplib import urllib.request # ftp settings ftpusername = 'abc' ftppassword = 'xyz' ftp_host = 'host' ftp_port = 1234 proxy_url = 'http://username:password@host:port' proxy_support = urllib.request.ProxyHandler({'http': proxy_url}) opener = urllib.request.build_opener(proxy_support) urllib.request

I tried logging into quora using python. But it gives me the following error. urllib2.HTTPError: HTTP Error 500: Internal Server Error This is my code till now. I also work behind a proxy. import urllib2 import urllib import re import cookielib class Quora: def __init__(self): '''Initialising and authentication''' auth = 'http://name:password@proxy:port' cj = cookielib.CookieJar() logindata = urllib.urlencode({'email' : 'email' , 'password' : 'password'}) handler = urllib2.ProxyHandler({'http' : auth}) opener = urllib2.build_opener(handler , urllib2.HTTPCookieProcessor(cj)) urllib2.install