Python

One feature of functional programming is that it allows the function itself to be passed as a parameter to another function, and also allows the return of a function Http://www.liaoxuefeng.com/wiki/001374738125095c955c1e6d8bb493182103fac9270762a000/

UDP communication (Python)ClientImportsocketHost = ' 127.0.0.1 'Port = 1024x768Buff_size = -Addr = (Host,port)Udp_client = Socket.socket (socket.af_inet,socket. SOCK_DGRAM) whileTrue:data = Raw_input (' > ') if not Data: BreakUdp_client.sendto

@decorator can dynamically realize the increase of function function, but after @decorator"transformation" function, compared with the original function, there is no other place other than the function.In the absence of decorator, print the function

When a function has many parameters, the caller needs to provide multiple arguments. If you reduce the number of parameters, you can simplify the burden on the caller.For example, theint () function converts a string to an integer, and when only the

If the imported module does not exist, the Python interpreter will report a importerror error:>>> Import Somethingtraceback (most recent): File ' ', line 1, in import Error:no module named somethingSometimes, two different modules provide the same

1. Understanding the data on the Web page The main data on the Web page are: Html Xhtml Xml Json Need a mechanism to accept the data and parse it Need a mechanism for generating data and sending

Similar to attributes, methods are also divided into instance methods and class methods .All defined in class are instance methods, and the first argument of the instance method is the instance itself.To define a class method in class, you need to

研究python服务器开发http://www.example-code.com/python/ssh_exec.asptelnet 118.193.152.71 51234Importsocket, Threadinghost='127.0.0.1'PORT= 51234s=Socket.socket (socket.af_inet, socket. Sock_stream) S.bind ((HOST, PORT)) S.listen (4) Clients= []#List of

1 # Baa Baa Baa Baa2 ImportOS3 ImportCodecs4 5 #get filename and size6j={}7 forIinchOs.listdir ("."):8m = Os.path.join (".", i)9 ifOs.path.isfile (m):Tenj[i]=os.path.getsize (m) One A #Sort the dictionary -Sort_result = sorted (J.iteritems (),

Python Hook Listener EventsAuthor: VpoetDate: Summer#-*-Coding:utf-8-*-# # by OLDJ http://oldj.net/#import pythoncom import pyhook def onmouseevent (event): # Monitor Mouse Event print "MessageName:", event. MessageName print "Message:", event.

1. Module Import:to use a module, we must first import the module. Python imports a module using the import statement. For example, import the module that comes with the system, math:ImportMath You can think of math as a variable that points to an

Fast ftp upload, download, query filesUsing Python to implement FTP server operations#!/usr/bin/python#ftp.py#this script is used to make some FTP operations more convenient#add upload and download operation s 20111210 version0.1import sys,os,ftplib,

python petals Beauty DownloadAuthor: VpoetDate: About in the summerNote: The code is free copy don't tell memain functions:1. Search for pictures under petal http://huaban.com/2. Number of downloaded images selected3. Show Download Progress4. Create

Setting up a TCP connection requires a "three-time handshake":First handshake: The client sends a SYN packet (SYN=J) to the server and enters the Syn_send state, waiting for the server to confirm;Second handshake: The server receives the SYN packet,

1. Download the UUID moduleHttps://pypi.python.org/pypi/uuid/Uuid-1.30.tar.gz2. Extract the UUID moduleTar zxvf uuid-1.3.0.tar.gz-c/usr/src3. Build ModuleCd/usr/src/uuidPython setup.py Build4. Install modulePython setup.py Installfunction

Sometimes it is necessary to invoke the shell command directly to complete some simple operations, such as mount a file system. So how do we use Python to invoke the Linux shell command? Here are a few common ways to do this:1. OS Module1.1. The

have been learning Matlab, recently think about learning Python,python and MATLAB, is a dynamic language, the definition of variables do not need to define the type as C,java, more flexible, so there is a sense of intimacy, some of the data recorded

Python functional programming guide (I): functional programming overview, python programming guide 1. Functional Programming Overview 1.1. What is functional programming? Function programming uses a series of functions to solve the problem. The

Python file reading methods and path escaping, 1. File Reading and display Method 1:Copy codeThe Code is as follows:F = open (r 'G: \ 2.txt ')Print f. read ()F. close ()Method 2: Copy codeThe Code is as follows:Try:T = open (r 'G: \ 2.txt ')Print t.

Pthon batch processing generates dssp files from pdb files, #-*-Coding: UTF-8-*-"Created on Sat Jun 20 19:36:34 2015 @ author: chaofn "import OS" The purpose of this program is to put all the files in the/ifs/home/fanchao/Manesh_pdb directory in