Python

Principle of principal component analysis and its Python implementation preface:This article mainly refers to Andrew Ng's machine learning course handout, I translated, and with a Python demo demo to deepen understanding.This paper mainly introduces

(0) CatalogueInstalling Ubuntu's blood-vomiting experience under VMware0 Basic Learning Shell programmingThe magical magic of makefile under LinuxLinux debugging artifact--GDB10 minutes Learn the basic types of Pythondistributed version management

The principle and the previous chapter to get the same, just a change of the content of the analysis.Code:#-*-coding:utf-8-*-import urllib2import redef getpagecontent (page_url,heads): Try:req = Urllib2. Request (page_url,headers=heads) resp =

Python uses the subprocess module to easily run system commands, and to get input, but when the output of the content of Chinese when the returned data is encoded, not normal display, so it is necessary to transcode, the process is as follows:First

DLL filethatDynamic Link library files, is aExecutable file, which allows programs to share executionSpecial TasksThe required code and other resources. I can't open it, but I can use it.Disassembly;PYD is aPythondynamic modules. Essentially DLL

Use Python to calculate the sum of the first 1 million-digit Fibonacci numbers and the result is 4501552.The following is the code I used, not the middle need some manual action to speed up convergence, interested readers can write code to speed up

This paper briefly introduces the characters of various commonly used character encoding, and introduces how to combat the coding problem in python2.x. Please note that the contents of this article on Python only apply to 2.x,3.x in STR and Unicode,

For a long time, no matter what program I write, I use C + +, because C + + is very powerful, from the bottom up to the upper level can be engaged. The underlying aspect C + + C compatibility, support inline assembly, can develop embedded programs,

1.Python encoded Base 1.1 STR and UnicodeThere are two data models in Python that support string data types, str and Unicode, and their base classes are basestring. For example s = "中文" , a string of type str, but u=u"中文" a string of Unicode type.

Encoding and decoding first, it is clear that the information stored in the computer is binary encoding/decoding is essentially a mapping (Correspondence Relationship), such as ' A ' ASCII encoding is 65, the computer is stored in 00110101, but the

Python multithreading reads the same fileMulti-threaded Read the same file, the requirements can not be duplicated, can not be omitted.A method was first tried (and later proved ineffective)The main thread is assigned to each read thread to read

Apscheduler is a Python timed task framework based on Quartz, which realizes all the functions of quartz and is very convenient to use. Provides tasks based on date, fixed time interval, and crontab type, and can be persisted. Based on these

System centos6.x 64-bitwget http://mirrors.163.com/centos/6/os/x86_64/Packages/lapack-devel-3.2.1-4.el6.x86_64.rpmwget http://mirrors.163.com/centos/6/os/x86_64/Packages/blas-devel-3.2.1-4.el6.x86_64.rpmwget http://mirrors.163.com/centos/6/os/x86_64/

Delete empty directories in the specified directory tree #! /usr/bin env pythonimport osimport sysdir =sys.argv[1]if os.path.isdir (dir): For Root,dirs,files in Os.walk (dir,topdown= False): #从最里向外遍历 for D in Dirs:if not Os.listdir (Os.path.join

Python writes a Process Monitoring script If you don't talk much about it, You can paste code directly. I don't like xml in your configuration files. The following is a custom configuration file: Class_config.py #! /Usr/bin/env python # coding: UTF-8

Python class inheritance usage instance analysis, python usage instance analysis This example describes how to use python class inheritance. Share it with you for your reference. The details are as follows: help('object') # testclass Class1(object):

Python stack implementation method, Python stack implementation method This article describes how to implement the stack in Python. Share it with you for your reference. The specific implementation method is as follows: #! /Usr/bin/env python #

Python uses the get and post methods to send http requests and receive http responses. This example describes how python sends http requests and receives http responses through get and post. Share it with you for your reference. The details are as

Python crawls the latest blog content and generates Rss; python crawls blog rss The rss of osc is not output in full text, so it is not happy that python captures the latest osc blog to generate Rss # -*- coding: utf-8 -*-from bs4 import

Details about the templates settings in the Python Django framework, djangotemplates TEMPLATES New Features of Django 1.8A list containing all template engine settings used in Django. Each item in the list is a dictionary that contains an engine