Python

When sending a request to the site, there has been a 503 error, the code is as follows:　　　　HTTP Error 503: Service UnavailableQuery network reasons, mainly the other side of the automatic query is limited, you can modify the header to deceive him,

~ Using regular Expressions- The RE module provides an interface to the regular expression engine that allows you to compile restring into objects and use them for matching.#如果经常使用, it is recommended to compile compileExample:>>> r1=r ' ^\d{3,4}-?\d{

Regular Expressions:* Regular expression (or re) is a small, highly specialized programming language (in Python) that is embedded in Python and implemented through the re module .-You can specify a rule for the corresponding string you want to match-

1. Open function Syntax:Python opens the file through the open function, creating a connection between the program and the file. Open function Syntax: Open (filename[,mode[,buffering]])where filename refers to the name of the file to be manipulated,

Happy Shrimphttp://blog.csdn.net/lights_joy/Welcome reprint, but please keep the author informationThe following is an attempt to isolate the soil and plants in the image, with the goal of getting green images and turning the soil background into

In Python, analog HTTP clients send get and post requests, primarily with the functionality of the Httplib module.1. Python sends a GET requestI built a test environment locally, the test.php content is to output a sentence: 1

For automation and performance testing, there is a need to have a Web server that controls the return message data, so Python initially implements a simple Web server that can handle HTTP requests (Get,post,put) and complete the response.Let's start

Function-Type programmingThe recent study of Python has been a bit of a snub, and the recent learning attitude and learning efficiency is really bad, and the current condition is improving.Today, I took a brief summary of the functional programming

# ifconfig eth0eth0      link encap:ethernet  hwaddr  50:e5:49:3a:ea:90            inet addr :172.28.10.71  bcast:172.28.10.255  mask:255.255.255.0           inet6 addr: fe80::52e5:49ff:fe3a:ea90/64 Scope:Link   

__new__: Object creation , is a static method, the first parameter is CLS. (Think about it too, it can't be self, the object hasn't been created, it's self)__INIT__: initialization of an object, is an instance method, and the first argument is self._

Here is a way to change the MD5 code of a file with Python.The idea is to add a piece of junk content to the file, without affecting the use.ImportOS, Globdeffileappend (filename): MyFile= open (filename,'a') Myfile.write ("####&&&&%%%%")

1. Copy.copy a shallow copy copies only the parent object and does not copy the inner sub-objects of the object. 2. copy.deepcopy deep copy copy objects and their sub-objects a good example:# -*-coding:utf-8 -*-import copya = [1, 2, 3, 4, [‘a‘, ‘b‘]]

Recently I have been lazy, but I feel sorry for the long time. Friends Study Raspberry Pi, help him write a voice weather forecast program a few days ago. Let me use the number.#coding =utf-8Import Urllib2,json,subprocess,time"' Get weather data,

CODE:#!/usr/bin/python #-*-Coding:utf-8-*-' Created on 2014-8-18@author:guaguastd@name:job_position_display.py ' ' # Import loginfrom Login Import linkedin_login# import jsonimport json# access to LinkedIn Apilinkedin_api = Linkedin_login ( ) # Load

The following items are in the hard learn PYTHON, which may be added later:1.Django, create a framework for the Web program: https://www.djangoproject.com/2.Scipy is a handy, easy-to-use Python toolkit designed for science and engineering. It

Before starting the Python network programming, the first thing to know about sockets, sockets is a computer network data structure. There are two types of sockets, namely, file-based and network-based, the former such as Af_unix, the latter such as

The meta of the Django model class is an internal class that defines the behavior characteristics of some Django model classes. Here is a summary of this: Abstract This property is defined as whether the current model class is not an

Python ValueError: invalid literal for int () with base 10 practical solution, valueerrorliteral Today, when I was writing a crawler program, because I had to flip pages and split pagesCopy codeThe Code is as follows:TotalCount = '000000' totalPage

The python module learns hashlib and the python module hashlib. 1. hashlib Overview Encryption Services: 14. Cryptographic Services Hashlib involves security hashing and message digest. It provides multiple different encryption algorithms, such as

Python implements asynchronous IO through poll, and pythonpoll asynchronous io This example describes how Python implements asynchronous IO through poll. Share it with you for your reference. The specific analysis is as follows: Poll object is