Python uses Xmlrpc instances to explain

RPC is the abbreviation of remote Procedure call, translated into Chinese is a long-distance method calls, is a local machine on the remote machine to invoke a process (method) technology, this process is called "distributed computing", is to

Python database operations frequently used features (CREATE TABLE/Insert data/Get Data)

Example 1, get MySQL version Copy the Code code as follows: #-*-Coding:utf-8-*- #安装MYSQL DB for Python Import MySQLdb as MDB con = None Try #连接mysql的方法: Connect (' IP ', ' user ', ' password ', ' dbname ') con = mdb.connect (' localhost ', ' root ',

Python uses URLLIB2 module to get Gravatar avatar instance

Gravatar Registered Address: https://en.gravatar.com/ Copy the Code code as follows: "" ' Gravatar `_""" # Import code for encoding URLs and generating MD5 hashesImport Urllib2, Hashlib # Make response slow if verify whether default avatar or

Python calculates the least-priority queue code share

Copy CodeThe code is as follows: #-*-Coding:utf-8-*- Class Heap (object): @classmethoddef parent (CLS, i):"" "Parent Node Subscript" ""return int ((i-1) >> 1); @classmethodDef left (CLS, i):"" "Left son subscript" ""Return (I @classmethoddef

Python switch Hosts file code example

Win7 above requires an administrator permission operation. Copy CodeThe code is as follows: #-*-Coding:utf-8-*- Import OS Import Glob Import Shutil def format_file_list (Files):All_files_str = ""For I in range (len (files)):All_files_str + = str (

Python read Android permission file

Today, I use Python to parse a text file in the following format: Copy CodeThe code is as follows: [ { "Key": "Android.permission.ACCESS_CHECKIN_PROPERTIES", "Title": "Access check-in Properties", "Memo": "allows read/write access to properties

Python list Syntax learning (with example)

Created: List = [5,7,9] Value and change: list[1] = list[1] * 5 End of List insert: List.append (4) Subtract the No. 0 value and return the value of the No. 0 value: List.pop (0) Remove the No. 0 value without returning a value: Del (list[0]) Remove

Local file upload to seven Cow Cloud Server example (seven Qiniu storage)

Copy CodeThe code is as follows: # _*_ Coding:utf-8 _*_ #--------------------------------------- # program: Upload local files to seven Cow cloud server # Version: 0.1 # Author: Liu Jia # Date: 2014-01-07 # language: Python 2.7 #--------------------

How Python crawls Web site data is saved using

Coding issuesBecause it involves the Chinese language, so inevitably involves the problem of coding, this time to take this opportunity to be completely clear. The problem should be from the coding of words. The original English code is only 0~255,

Linux systems use Python to monitor network interfaces for network input and output

net.py getting the input and output of the network interface Copy the Code code as follows: #!/usr/bin/env Python Import time Import Sys If Len (SYS.ARGV) > 1:INTERFACE = sys.argv[1]ElseINTERFACE = ' eth0 'STATS = []print ' Interface: ', Interface

Use Python django to make Web pages

1. Create a Django ProjectUse django-admin.py startproject mydjangosite reference here 2. Build a View From django.http import httpresponsedef Hello (Request): Return HttpResponse ("My first simple Python Django project. ") 3, modify the urls.

Implementation instances of the Python thread pool

Directly on the code: Copy the Code code as follows: #-*-Coding:utf-8-*-Import QueueImport threadingImport UrllibImport Urllib2Import OS def down (url,n):print ' Item ' +STR (n) + ' start 'Filename=urllib2.unquote (URL). Decode (' UTF8 ').

Download Bing pictures (code) using Python

Directly on the code: Copy the Code code as follows: #-*-coding:cp936-*-Import UrllibImport OSprint ' Download data ... 'url = ' http://cn.bing.com 'urlfile = Urllib.urlopen (URL)data = Urlfile.read ()Urlfile.close ()data = Data.decode (' Utf-8 '

Python Django connect MySQL database to make additions and deletions

1. Download and install the MySQLdb class libraryhttp://www.djangoproject.com/r/python-mysql/ 2. Modify settings.py Configuration Data Properties Copy CodeThe code is as follows: DATABASES = { ' Default ': { ' ENGINE ': ' Django.db.backends.mysql '

Python Automation tool log Query Analysis script code implementation

Controlled node slave.py Copy the Code code as follows: Import socket Import re Class Log (object): file_list=[' Access.log ', ' C:\\access.log '] master_ip= ' 192.168.0.103 ' def __init__ (self): S=socket.socket (Socket.af_inet,socket. SOCK_STREAM)

Python parsing JS example using Scrapy

Copy CodeThe code is as follows: From selenium import Selenium Class Myspider (Crawlspider):name = ' Cnbeta 'Allowed_domains = [' cnbeta.com ']Start_urls = [' http://www.jb51.net '] Rules = (# Extract links matching ' category.php ' (but not

Python implementation question-mark expression (?) The method

And and or in Python are quite different from other languagesAnd and or in other languages are the result of returning a bool type, not python. It returns one of the values that do the and and or operations. The value that determines the value of

Pyramid How to distribute the contents of a models.py file to multiple files

We changed the models.py to a package through the following file structure. Copy the Code code as follows: MyApp __init__.py Scripts __init__.py initialize_db.py Models __init__.py meta.py foo.py moo.py Above meta.py, define a different model

Python using MySQLdb to connect to a database how-to examples

Copy CodeThe code is as follows: #-*-Coding:utf-8-*- #mysqldbImport time, MySQLdb#连接Conn=mysqldb.connect (host= "localhost", user= "root", passwd= "", db= "test", charset= "UTF8")cursor = Conn.cursor ()#写入sql = "INSERT into user (name,created)

Python33 URLLIB2 How to use details

Settings for Proxy URLLIB2 uses the environment variable HTTP_PROXY to set the HTTP proxy by default. If you want to explicitly control the Proxy in the program without being affected by the environment variables, you can use the following

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