python scrapy example

Installation of 1.redis: http://www.runoob.com/redis/redis-install.html2. Test if you can log in remotelyUse the Windows Command window to enter the Redis installation directory and use the command to remotely connect Centos7 Redis:Redis-cli-h 192.168.1.112-p 6379Test if you can read the master Redis on this machineIf this error is:Then open Linux, modify the contents of the/etc/redis.conf, add the following code, and then re-run on Windows again:#注释bind #bind 127.0.0.1protected-mode NoRead whet

Inverted indexThe inverted index stems from the fact that a record needs to be found based on the value of the property. Each entry in this index table includes an attribute value and the address of each record that has that property value. Because the property value is not determined by the record, it is determined by the property value to determine the position of the record, and is therefore called an inverted index (inverted). A file with an inverted index is called an inverted index file (i

Or the site of the previous blog, we added pipeline.pyitems.pyFrom Scrapy.item Import Item, Fieldclass Website (item): Name = field () Description = field () url = field ()dmoz.pyfromscrapy.spiderimportspiderfromscrapy.selectorimportselectorfrom Dirbot.itemsimportwebsiteclassdmozspider (Spider):name= " Dmoz "allowed_domains=[" dmoz.org "]start_urls= [ "http://www.dmoz.org/Computers/Programming/Languages/ python/books/"," http://www.dmoz.org/Computers/

Download Pywin32, Twisted's WHL package first: http://www.lfd.uci.edu/~gohlke/pythonlibs/By command: Pip install xxxx installs the following files Installing lxml==3.7.2 Installing Zope.interface Installing PYWIN32-221-CP36-CP36M-WIN_AMD64.WHL Installing TWISTED-17.1.0-CP36-CP36M-WIN_AMD64.WHL After installing ez_setup.py, URL: https://pypi.python.org/pypi/ez_setup, unzip and put ez_setup.py into the Python installation directo

This article describes the way Python uses a proxy server when collecting data based on scrapy. Share to everyone for your reference. Specifically as follows: # to authenticate the proxy, #you must set the proxy-authorization header. #You *cannot* Use the form http://user:pass@proxy:port #in request.meta[' proxy '] import base64 Proxy_ip_ Port = "123.456.789.10:8888" proxy_user_pass = "Awesome:dude"

": "Jobbole", "_type": "Job", "_id": "6"}}{"title": "Development", "Salary_min": "City": "Beijing", " Company ": {" name ":" Baidu "," company_addr ":" Beijing Software Park "}," Publish_date ":" 2017-4-16 "," Comments ": 15}Bulk Bulk Operations Bulk Delete dataPOST _bulk{"Delete": {"_index": "Jobbole", "_type": "Job", "_id": "5"}}{"delete": {"_index": "Jobbole", "_type": "Job", "_ ID ":" 6 "}}Bulk Bulk Operations Batch modification dataPOST _bulk{"Update": {"_index": "Jobbole", "_type": "Job",

(in the case of FP) (I am using the root user) (1) Export data and table structure Export the SQL script using the mysqldump command (if you do not specify an export path, export to the current path by default) Format: Mysqldump-u user name-p (password) database name > database name. sql Mysqldump-u root-p FP > Fp.sql Prompt for password after enter (2) Export table structure only Format: Mysqldump-u user name-p (password)-d database name > database name. sql Mysqldump-u root-p-D FP > Fp.sql Se

Python decorator use example and actual application example, python example Test 1 Deco is running, but myfunc is not running Copy codeThe Code is as follows:Def deco (func ):Print 'before func'Return func Def myfunc ():Print 'myfunc () called'Myfunc = deco (myfunc) Test 2

Boost. python compilation and example, boost. python example Welcome to reprint, reprint please indicate the original address: http://blog.csdn.net/majianfei1023/article/details/46781581 Linux compiled boost link: http://blog.csdn.net/majianfei1023/article/details/46761029 Yesterday, we compiled and installed boost.

Details about the Python mail sending example and the python mail sending example Python needs two modules: smtplib and email. It is also because we can import these modules in our actual work that it makes processing tasks easier. Today, let's take a good look at sending em

Python combination mode and responsibility chain mode programming example, python example Combination ModeWe regard the Composite mode as a complex attribute structure. In fact, there are basically three roles: trunk (defining some operations for leaf) and branches (many branches on the trunk) and the leaf (the object

The example explains how to call and define functions in Python, and the example explains python Call the function: #! /Usr/bin/env python3 #-*-coding: UTF-8-*-# function call >>> abs (100) 100 >>> abs (-110) 110 >>> abs (12.34) 12.34 >>> abs (1, 2) Traceback (most recent call last): File " Define functions: #! /Usr/bi

Python list and metadata definition and use operation example, python example This document describes how to define and use Python lists and metadata groups. We will share this with you for your reference. The details are as follows: # Coding = utf8print ''' the list and ele

Python: Simple Method example for deleting the same element in the list, python example This example describes how to delete the same elements in the list in Python. We will share this with you for your reference. The details are

Example of zip () function usage in Python and python example This article describes the definition and usage of the zip () function in Python. I believe it is of some reference value for beginners of Python. The details are as fo

Python decorator usage example summary, python decorator usage example This document describes how to use the Python decorator. We will share this with you for your reference. The details are as follows: I. What is the decorator? The pyt