python web crawler tutorial

Baidu paste the reptile production and embarrassing hundred of the reptile production principle is basically the same, all by viewing the source key data deducted, and then stored to a local TXT file. SOURCE Download: http://download.csdn.net/detail/wxg694175346/6925583 Project content: Written in Python, Baidu paste the Web crawler. How to use: After you creat

#-*-Coding:utf-8-*-# python:2.x__author__ = ' Administrator 'Import Urllib2#例子Login= ' WeSC 'Passwd= "You ' llneverguess"Url= ' http://localhost 'def h1 (URL):From Urlparse import Urlparse as UpHdlr=urllib2. Httpbasicauthhandler ()Hdlr.add_password (' Archives ', Up (URL) [1],login,passwd)Opener=urllib2.build_opener (HDLR)Urllib2.install_opener (opener)Return URLdef req (URL):From Base64 import encodestring as SReq1=urllib2. Request (URL)B64str=s ('%s

Python web crawler for beginners (2) and python Crawler Disclaimer: the content and Code involved in this article are limited to personal learning and cannot be used for commercial purposes by anyone. Reprinted Please attach this article address This article

Baidu Bar Crawler production and embarrassing hundred crawler production principle is basically the same, are through the View Source button key data, and then store it to the local TXT file. Project content: Use Python to write the web crawler Baidu Bar. How to use: Cre

http://blog.csdn.net/pleasecallmewhy/article/details/8934726 Update: Thanks to the comments of friends in the reminder, Baidu Bar has now been changed to Utf-8 code, it is necessary to decode (' GBK ') to decode (' Utf-8 '). Baidu Bar Crawler production and embarrassing hundred crawler production principle is basically the same, are through the View Source button key data, and then store it to the local TX

http://blog.csdn.net/pleasecallmewhy/article/details/8932310 Qa: 1. Why a period of time to show that the encyclopedia is not available. A : some time ago because of the scandal encyclopedia added header test, resulting in the inability to crawl, need to simulate header in code. Now the code has been modified to work properly. 2. Why you need to create a separate thread. A: The basic process is this: the crawler in the background of a new thread, h

; trident/5.0; SLCC2;. NET CLR 2.0.50727;. NET CLR 3.5.30729;. NET CLR 3.0.30729; Media Center PC 6.0;. net4.0c;. net4.0e; qqbrowser/7.0.3698.400) "," mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Qqdownload 732;. net4.0c;. NET4.0E) ",] Copy this code directly into the Settings file to Configuring PROXIES in Settings For more information about proxy IP, see: Python crawler

/pypi/python-whoisInstallation: Pip Install Python-whois >>> import whois >>> print whois.whois (' appspot.com ') {...] Name_servers ": [ " NS1. Google.com ", ... " Ns2.google.com ", " ns1.google.com " ], " org ":" Google Inc. ", " creation_date ": [ " 2005-03-10 00:00:00 ", " 2005-03-09t18:27:55-0800 " ], " emails ": [ " [email protected] ", "

Project content: A web crawler in the Encyclopedia of embarrassing things written in Python. How to use: Create a new bug.py file, and then copy the code into it, and then double-click to run it. Program function: Browse the embarrassing encyclopedia in the command prompt line. Principle Explanation: First, take a look at the home page of the embarrassing

# print result. read () self. deal_data (result. read (). decode ('gbk') self. calculate_date (); # extract the content from the page code def deal_data (self, myPage): myItems = re. findall ('.*? (.*?) .*? (.*?) .*?', MyPage, re. s) # obtain credits for item in myItems: self. weights. append (item [0]. encode ('gbk') self. points. append (item [1]. encode ('gbk') # calculate the score. if the score is not displayed or the score is excellent, def calculate_date (self) is not ca

Perform some necessary parameter initialization. Open_spider (spider): The Spider object is called when it is turned on. Close_spider (spider): Called when the Spider object is closed Spider Directory corresponding to the file under the folder spider _ init _: Initialize the crawler name, start _urls list Start_requests: Generate requests object to scrapy download and re

Recently, I have been collecting and reading some in-depth news and interesting texts and comments on the Internet for the purposes of public accounts, and have chosen several excellent articles to publish them. However, I feel that it is really annoying to read an article. I want to find a simple solution to see if I can automatically collect online data and then use the unified filtering method. Unfortunately, I recently prepared to learn about web