python recommender system library

OS.GETCWD (): Gets the current directory Os.name: Gets the operating system that is currently in use Eg:print Os.name Os.remove (): Delete the specified file Eg:os.remove (' Test.txt ') Os.removedirs (): Delete the specified directory Eg:os.removedirs (' TestCase ') Os.system (): Run shell command Eg:os.system (' Javac ') Os.mkdir (): Create a new directory Eg:os.mkdir ("TestCase") Os.chdir (): Modifies the current path to the

Installation methodwget http://www.dnspython.org/kits/1.9.4/dnspython-1.9.4.tar.gzTAR-ZXVF dnspython-1.9.4.tar.gzCD dnspython-1.9.4Python setup.py InstallBecause usually in the test dudns or Jomodns when some operations manual completion inconvenient, so need to use the script, and in Python Dnspython This is used for the DNS operation of the library is very powerful, but helpless online most of the informa

This module contains common operating system functions. This module is especially important if you want your program to be platform-agnostic. That is, it allows a program to be written without any changes or problems, and can be run under Linux and Windows. An example is os.sep the use of a path delimiter that can replace an operating system specific.Some os of the more useful parts of the module are listed

Os.path.dirname (PATH) Returns the directory of path. is actually the first element of Os.path.split (path) Os.path.basename (PATH) Returns the last file name of path. A ／ \ null value is returned if the path is or ends. The second element of Os.path.split (path) Os.path.exists (PATH) Returns true if path exists, false if path does not exist Os.path.isabs (PATH) Returns true if path is an absolute path Os.

Details about python processes and process pools (Processing Library) and pythonprocessing Environment: win7 + python2.7 I always wanted to learn multi-process or multi-thread, but I just read some basic knowledge and briefly introduced it before, so I cannot understand how to apply it, some time ago, I saw that a crawler project on github involves multi-process and multi-thread related content, while looki

The development platform is a Mac and needs to use the Python image processing library pil, which records the installation process as well as the problems that arise.The basic installation process is this, using the command pip for installation The code is as follows Copy Code $ pip Install PiLDownloading/unpacking pilCould not find no downloads that satisfy the requirement PILS

Python library requests log on to zhihu, requestszhihu After a lot of effort, I began to mistakenly log on to the post information website. Later, I did not find the xsrf information. I read many articles to get it done. The process is as follows: Open the logon page, open fldder, and enter information to monitor the process. Check which information is post, which are self-input, and which are generat

Preface : 工欲善其事, its prerequisite. Find deep learning data, found a python package:Theano. Then began to study, of course, the best information is the official website documents, did not find a better Chinese document, then recorded. Theano official website Tutorial. Deep learning tutorial:http://deeplearning.net/tutorial/.Theano install:http://deeplearning.net/software/theano/install.html.as I use the Dell all-in-one machine, 64-bit WIN8 operating

Re: Regular expression__all__= [ "Match","Fullmatch","Search","Sub","subn","Split", "FindAll","Finditer","Compile","Purge","Template","Escape", "Error","A","I","L","M","S","X","U", "ASCII","IGNORECASE","LOCALE","MULTILINE","Dotall","VERBOSE", "UNICODE",]Some constantsI = IGNORECASE = Sre_compile. Sre_flag_ignorecase#Ignore case#make the match case insensitiveL = LOCALE = Sre_compile. Sre_flag_locale#assume current 8-bit locale#affects "W," W, "B, and" B, depending on the current l

' Befort: 'Print getoutput (r ' copy ')Shutil.rmtree (R ' copy ', R ' Copy/abcde ')print ' After: 'Print getoutput (r ' copy ')#默认地, errors are generated as exceptions, but if the second argument is true, you can ignore the exceptions and provide a special error-handling function in the third parameter#要把一个文件或者目录从一个位置移动到另一个位置可以使用move.With open (' aa.txt ', ' wt ') as F:F.write (' AA ')print ' Beform: ', Glob.glob (' CC ')Shutil.move (' Aa.txt ', ' Aa.bim ')print ' Atfer: ', Glob.glob (' CC ')#其

The OS module is a core module that Python comes with to interact with operating system objects.1. Import module for help>>> Import OS>>> Help (OS)>>> dir (OS)2. Common methods2.1 Os.sep Get the path delimiter for the current system>>> Print Os.sep/2.2 Os.linesep Gets the line terminator used by the current platform>>> Os.linesep' \ n '2.3 Os.name Judging the pla

a tuple (ipaddr,port)Sk.fileno ()file descriptor for socketsSecond, get some address and host nameThe socket module provides several functions for working with host names and addresses.Socket.gethostname ()GetHostName () returns the host name of the computer on which the program is runningSocket.gethostbyname (' www.jb51.net ')gethostbyname (name) attempts to interpret the given host name as an IP address.GETHOSTBYNAME_EX (name)It returns a tuple of three elements, namely a list of the primary

) Open URL in a new window of the browser handled by this controller, if possible, otherwise, open URL in The only browser window. Alias open_new (). Controller. Open_new_tab ( url ) Open URL in a new page ("tab") of the browser handled by this controller, if possible, otherwise equivalent to open_new (). Footnotes [1] Executables named here without a full path would

Download something called SWFToImage. dll first Create a bat file and run: Copy codeThe Code is as follows: COPY SWFToImage. dll % windir % \ system32 Regsvr32 % windir % \ system32 \ SWFToImage. dll Copy codeThe Code is as follows: # Use python to download the code of Baidu Library. modify the code as required. The following is a prompt:# Http://www.cnblogs.com/dearplain/# Code by plainImport urllib2Import

Chapter 1th Text 12nd. Data Structure 55The 3rd Chapter algorithm 103Chapter 4th date and Time 138The 5th Chapter Mathematics Calculation 1576th. Document System 1977th Data Persistent storage and exchange 2678th. Data compression and archiving 3409th Encryption 378Chapter 10th process and thread 38711th. Network communication 45212th Chapter internet51413th Chapter email58714th Application Building Module 623Chapter 15th internationalization and Loca

thread.The instruction pointer and stack pointer registers are the two most important registers in the thread context, and threads are always run in the context of the process, which is used to flag memory in the process address space of the owning thread.The thread can be preempted (interrupted).Threads can be shelved (also known as sleep) while other threads are running-this is the thread's retreat.Threads can be divided intoKernel thread: Created and revoked by the operating

Which Python version? When I mentioned Python, I was referring to CPython 2 (exactly 2.7). I will explicitly remind those same code to not work on CPython 3 (3.3) and provide an alternate code that explains the difference. Make sure you have the CPython installed, enter Python or Python3 carriage return on the terminal, and you should be able to see the

Networkx is a set of Python-based network construction libraries. Because I didn't learn python before, so a little bit, this article tells you how to install Python2.7 and networkx in a Windows environment.First of all, to clarify, if you want to learn more about Python in the system, or to change the Linux

project to package all. py files into a single ZIP file to avoid calling stat. This project requires REPL (read-evaluate-output loop) with history and tab auto-completion, but the supported method is to use the Readline library of GUN. This library is provided by POSIX with terminal devices (which can port operating system interfaces. Developers do not want to w

all. py files into a single ZIP file to avoid calling stat. This project requires REPL (read-evaluate-output loop) with history and tab auto-completion, but the supported method is to use the Readline library of GUN. This library is provided by POSIX with terminal devices (which can port operating system interfaces. Developers do not want to write a "C code file