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Example of how Python logs on to a Web site

= Cookielib. Lwpcookiejar () opener = Urllib2.build_opener (urllib2. Httpcookieprocessor (CJ) Urllib2.install_opener (opener) # loginuser_data = {' Pwuser ': ' Your username ', ' pwpwd ': ' Your password ', ' Step ': ' 2 ' } Url_data = UrlEncode (user_data) Login_r = Opener.open ("http://bbs.qzzn.com/login.php", Url_data) Some notes: Urllib2 is obviously a bit more advanced than the

Python Urllib, URLLIB2, httplib crawl page code instances

= urllib2. Request (URL, headers=i_headers) #创建request后, other additions can be made, and if key repeats, the latter takes effect #request. Add_header (' Accept ', ' application/ JSON ') #可以指定提交方式 #request. Get_method = lambda: ' PUT ' try:page = Urllib2.urlopen (req) Print Len (Page.read ()) #likE Get #url_params = Urllib.urlencode ({"A": "1", "B": "2"}) #final_url = URL + "?" + url_params #print final_url #data = Urllib2.urlopen (Final_url). Read () #print "Method:get", Len (data) except URLL

A little summary of Window.opener in JavaScript

Window.opener (omit write as opener) to refer to a.html, including A.html's document and other objects, to manipulate the contents of a.html.If this reference fails, then NULL is returned. Therefore, before invoking the opener object, you should first determine whether the object is null, otherwise the "object is empty or does not exist" JS error.Add a little bit about the difference between Window.opener

Python crawlers capture data transmitted by mobile apps

; U; Android 4.1.1; M040 Build/JRO03H)','Host': '120.55.151.61','Connection': 'Keep-Alive','Accept-Encoding': 'gzip','Content-Length': '207',}loginData = 'phoneBrand=Meizuplatform=1deviceCode=868033014919494account=FCF030E1F2F6341C1C93BE5BBC422A3DphoneVersion=16password=A55B48BB75C79200379D82A18C5F47D6channel=MXMarketphoneModel=M040versionNumber=7.2.1'cookieJar = CookieJar()opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar))req = url

Python crawler simulated logon website with verification code

the cookie for login, and then directly post data to the login address. First, use the packet capture tool or Firefox or Google Chrome to analyze the post request and header information on the login page. Take Google as an example. It can be seen that the url to post is not the accessed page, but http: // 202.115.80.153/default2.aspx, The TXT username and TextBox2 usernames and passwords in the form data to be submitted are respectively. Now go directly to the key part of the code !! Import u

Python login and posting Method

This article mainly introduces how to log on to and post a message using python. It involves URL simulated login and cookie usage skills and has some reference value, for more information about how to log on to Douban using python and post it, see the example in this article. Share it with you for your reference. The details are as follows: Use of urllib, urllib2, and cookielib Log on to Douban. Because there is a verification code, you can download the verification code image to the same direc

How to use the cookielib module to operate cookies in Python

= "http://www.renren.com/ajaxLogin">>> cj = cookielib.CookieJar()>>> opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))>>> opener.add_handler = [('User-agent','Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)')]>>> data = urllib.urlencode({"email":'username',"password":'password'}) >>> opener.open(login_page,data)>>>> if cj:... for index,cookie in enumerate(cj):... print index,':',cookie... 0 : 1 : 2 : 3 : 4 : 5 : 6 : 7

Example of using cookielib Library in python

In Python, the cookielib Library (http. cookiejar in python3) provides client support for storing and managing cookies. The following is an example. The main function of this module is to provide objects that can store cookies. This module captures cookies and resends them in subsequent connection requests. It can also be used to process files containing cookie data. This module provides the following objects: CookieJar, FileCookieJar, MozillaCookieJar, and LWPCookieJar. 1. CookieJar CookieJar

How python processes cookies

)>>> Opener = urllib2.build _ opener (handler)>>> Opener. open ('HTTP: // www.google.com.hk ') The cookie used to access google has been captured. Let's take a look at the following:Copy codeThe Code is as follows:>>> Print cookie It seems to be a set of Cookie instances. Cookie instances have attributes such as name, value, path, and expires: Copy codeThe Code i

BOM (Browser object model) browser objects models

update;Opener Open the window of the current window;The parent points to a window that contains another window (used by the framework);Screen display-related information, such as height/width (in pixels;)Self indicates the current window;Status describes the temporary information that is caused by user interaction;Top contains the topmost window of a particular window (used by the framework);Windows indicates the current window, which is equivalent t

The first Python program -- Automatic blog Access Script

obtain page information based on the URL is solved. To solve this problem, you need to use HTTP client programming. This is also the problem solved in the next section.Urllib2: HTTP client Programming There are several libraries in Python that can implement HTTP client programming, such as httplib, urllib, and urllib2. Urllib2 is used because it is powerful, easy to use, and can easily use HTTP proxy. Using urllib2 to create an HTTP connection and obtain the page is very simple, only three step

[Original] Two Methods for opening and closing old windows!

1st Methods The window to be opened is about.htm. Script Language = Javascript > Function Openwin (){Newwin = Zookeeper open('about.htm', 'login', 'location = No, Toolbar = No, status = Yes, resizable = No, scrollbars = No, menubar = No, directories = No ')Newwin. moveTo ( - 3 , - 3 );Newwin. resizeTo (screen. availwidth + 6 , Screen. availheight + 6 );Window. Opener = Nu

Python crawlers capture data transmitted by mobile apps and python crawlers capture apps

': 'Keep-Alive','Accept-Encoding': 'gzip','Content-Length': '207',}loginData = 'phoneBrand=Meizuplatform=1deviceCode=868033014919494account=FCF030E1F2F6341C1C93BE5BBC422A3DphoneVersion=16password=A55B48BB75C79200379D82A18C5F47D6channel=MXMarketphoneModel=M040versionNumber=7.2.1'cookieJar = CookieJar()opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookieJar))req = urllib2.Request(loginUrl, loginData, headers)loginResult = opener.open(req).re

Jswindow object attributes and Methods

. releaseevent (event) Window. releaseevent (Event 1 | event 2 |... | Event n) Function: release captured events passed in by parameters. These events are set by the window. captureevent method. The releasable events are the same as those of captureevent. 29. routeevent Syntax format: window. releaseevent (event) Function: transfers all captured events to the standard event handling method for handling. The events that can be transferred are the same as those of captureevent. 30. scroll event Sy

Python crawls Baidu image search results

Import multipartposthandler, urllib2, cookielib Url = 'HTTP: // stu.baidu.com/I? RT = 0rn = 10 Ct = 0 STT = 0 Tn = baiduimagepc FTN = indeximag'Cookies = cookielib. cookiejar ()Opener = urllib2.build _ opener (urllib2.httpcookieprocessor (cookies), multipartposthandler. multipartposthandler)Params = {'image': open ('/home/***/temp/2.jpg', 'rb ')}Page = opener

Full introduction to window object attributes in Javascript

Proficient in the use of open, close, alert, confirm, prompt, setTimeout, cleartimeout, setinterval, clearinterval, moveBy, resizeBy, and scrollby methods of window objectsMeasure the test taker's knowledge about how to use the moveTo, resizeTo, scrollto, and print methods of window objects.Familiar with the use of window objects in the status, location, name, self, and opener attributes of window objects is one of the top JavaScript objects on the cl

Write the first crawler with the Python 0 basics

common method is to add the User-agent request header, impersonating a browser request, to coax the article server, because some servers do not allow program access.The latter two parameters are generally not used, no longer introducereturn valueA Request object4, Urllib2. Openerdirector classWhen you get a URL, you need to use a opener (Openerdirector). Normally we always use the default opener, which is

The Filecookiejar of Reptiles

Brief introductionAlthough the Cookiejar module is capable of setting a cookie for a request, its cookie is stored in memory and needs to be reset each time.This derives a subclass of it---filecookiejar, which can store the cookie in a file and then use it directly.Save the sample cookieFrom urllib import request,parsefrom http import cookiejar# Create Filecookiejar Instance object # It takes a parameter, both the location of the cookie to save the filename = ' Cookie.txt ' cookie = Cookiejar. F

Python3 in urllib use with source code

the content of a site, on the other side of the site, the display is not our real IP address, but the IP address of the proxy server)defUse_proxy (proxy_addr,url):ImportUrllib.request Proxy=urllib.request.proxyhandler ({'http':p roxy_addr}) Opener=Urllib.request.build_opener (Proxy,urllib.request.httphandler) Urllib.request.install_opener (opener) data =urllib.request.urlopen (URL). read (). Decode ('UTF8'

Urllib.request Usage Brief introduction (Python3.3)

'})Opener=urllib.request.build_opener (Handler)The Urllib.request.install_opener (opener) #安装opener作为urlopen () uses the global URL opener, which is the opener object that is installed when Urlopen () is called later.Response=urllib.request.urlopen (' http://www.google.com

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