A simple crawler entry code to crawl the jokes on the wiki homepage (excluding images, text only)
Selenium and Chromedriver need to be installed.
Place the Chromedriver.exe in the Chrome installation directory.
Configure environment variables. Click My Computer, Properties--Advanced system Settings->path-> new (Chrome installation location, like mine is: C:\Program Files (x86) \google\chrome\application)#/usr/bin/env python#Coding:utf-8#Import Selenium fromSeleniumImportWebdriverclassQiu
1. Get the embarrassing Wikipedia URLHttp://www.qiushibaike.com/hot/page/2/End 2 refers to page 2nd2. Analysis page, find the location of the section, need a bit of CSS and HTML knowledge3. Write code1 Importurllib.request2 fromBs4ImportBeautifulSoup3 fromUrllib.requestImportUrlerror4 fromUrllib.requestImportHttperror5 Import Time6 #methods to invoke the Publicheaders file7 fromCrawler. publicheadersImportset_user_agent8 9 Ten #Crawling Web pages
Learn Python without writing a crawler, not only can learn vitalize, practice using Python, the reptile itself is also useful and interesting, a lot of repetitive download, statistical work can write a crawler complete.
Using Python to write reptiles requires the basics of Python, several modules that involve the network, regular expressions, and file manipulation. Yesterday I studied online, and wrote a crawler to automatically download the "embarrassing
A joke about crawling the embarrassing encyclopedia:1. Use XPath to analyze the expression of the first crawl content;2. Obtain the original code by initiating the request;3. Use XPath to analyze source code and extract useful information;4. Convert from Python format to JSON format and write to file#_ *_ coding:utf-8 _*_ "Created on July 17, 2018 @author:sssfunction: Crawl the contents of the Embarrassing
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, has climbed the two pages of the
How to achieve smooth and slide switching between the weekly and monthly calendars, water drop effects, highly customizable, similar to the Xiaomi calendar, and weekly and monthly Xiaomi
Post rules first
Add dependency
Compile 'com. github. idic779: monthweekmaterialcalendarview: 8080'
For details about how to use it, see hereWhat can this database do?
Allows you to control whether to allow sliding between the left and right sides, sliding up an
This article summarizes three php functions for getting calendars, php is used to obtain the calendar of the month of the specified date, the start date and end date of the month of the specified date, and the date range of the current week.
This article summarizes three php functions for getting calendars, php is used to obtain the calendar of the month of the specified date, the start date and end date of
The first essay begins with my homework. Words don't say much, look down.First of all, I want to write something that is related to the Java we have recently studied the layout, the above machine work as a prototype, made a few changes and then uploaded, so still belong to the author's ThingsLet's start with the implementation section of the calendar and define the Calendarbean class, which is used to implement the calendar week and date functions.ImportJava.util.Calendar; Public classCalendarbe
Quartz Calendar objects (notJava.util.Calendar objects) can being associated with triggers at the time of the trigger is de Fined and stored in the scheduler.Calendars is useful for excluding blocks of time from the trigger ' s firing schedule. For instance, could create a trigger that fires a job every weekday at 9:30am, but then add a Calendar that exclu Des all of the business ' s holidays.Calendar's can is any serializable object that implements the Calendar interface {shown below). package
also bundled calculators, clocks, calendars, notebooks, and a few other small applications.
12. Despite the limited number of applications bundled in Windows 1.0, Microsoft's early advertisement claims that Windows has an extremely useful application.
Windows 1.0 applications
13. Due to the lack of third-party software companies to develop applications for Windows 1.0, Windows 1.0 sales are very poor. Microsoft's Word and Excel versions wer
Whether Android can change the embarrassing situation of Linux smartphones-Linux general technology-Linux technology and application information. The following is a detailed description. Have you ever used a Linux smartphone? For example, Motorola's E680 and A780. Are there very few software available for these so-called "smart" mobile phones, and only copies of Java software can be used for downgrading? The current situation is: you have purchased a
= img.get ('src') in if 'http' inchLink: - Print "It ' s downloading%s"%x +"th ' s piture" toUrllib.urlretrieve (link, New_path +'%s.jpg'%x) +x + = 1 - the exceptException, E: * Printe $ Else:Panax Notoginseng Pass - finally: the ifx: + Print "It ' s done!!!"The next result:Summarize:Although the initial thinking is not clear, and how to save the picture, are not very familiarBut after their own thinking, as long as th
A file contains more than 1000 lines. I don't know if it is too embarrassing. a php file already contains more than 1000 lines. it has been more than a week. background Data analysis page... ------ solution ------------------ can be implemented, but it is good to divide the function into class files for management. ------ solution -------------------- reference: cited a file and wrote more than 1000 lines, I don't know if it's too cool.
A php file ha
Abstract: This article explains why the socket connection is locked in the close_wait status and how to avoid this situation.
Not long ago, my Socket ClientProgramI encountered a very embarrassing error. It should have been sending data continuously to the server on a persistent socket connection. If the socket connection is disconnected, the program will automatically retry the connection.
One day, I found that the program was constantly trying
Link: http://zhengtanyun.blog.163.com/blog/static/126417059201081464739326/
It took an afternoon for the senior position to be interviewed. The results of both the written examination and two rounds of interviews were embarrassing.
First, let's talk about the written examination. There are 23 questions in the written examination, and two questions need to be written.CodeThe rest are subjective questions. The questions are very basic, but I haven't
Jump404: File does not exist403: No Access502: Server ErrorIii. HTTP protocol Request and responseRequest: The user sends their own information to the server (socket server) via the browser (socket client)Response: The server receives the request, parses the request information from the user, and then returns the data (the returned data may contain other links, such as: pictures, js,css, etc.)PS: After receiving response, the browser will parse its contents to display to the user, and the crawl
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