Python

For the Observer pattern in design mode, the definition is as follows (Wikipedia): The Observer pattern (sometimes referred to as the release/subscribe mode) is one of the software design modes. In this mode, a target object manages all the

The code is as follows: #!/usr/bin/python#-*-coding:utf-8-*- From Pyqt4.qtgui Import *From Pyqt4.qtcore Import *From PYQT4.QT Import * Class Changeskinwidget (Qwidget):def __init__ (self,parent = None):Super (Changeskinwidget,self). __init__

Introduction to the method of climbing a mountain Mountain climbing (climbing method) is an optimization algorithm, which usually starts with a random solution and then finds an optimal solution (local optimal). Assuming that the problem has

Hanoi (also known as Hanoi) is a puzzle toy derived from an ancient Indian legend. When big Brahma created the world, he made three diamond pillars, and stacked 64 gold discs on a pillar from bottom to top in order of size. The great Brahma

The code is as follows: #-*-coding:cp936-*-From Scapy.all Import *From threading Import Thread,lock,activecount Broadcastmac = Getmacbyip (' 192.168.0.120 ') Class Loop (Thread):def __init__ (SELF,IP):Thread.__init__ (self)Self.ip = IPdef run

The code is as follows: #-*-coding:cp936-*-From Scapy.all Import *From threading Import Thread,activecountFrom random import Randint Class Loop (Thread):def __init__ (SELF,REMOTEADDR):Thread.__init__ (self)SELF.REMOTEADDR = remoteaddr def run (self)

tcp.py The code is as follows: #-*-coding:cp936-*-Import socketfrom struct import *From time import Ctime,sleepFrom OS import system System (' title TCP Sniffer ')System (' Color 05 ') # The Public network interfaceHOST = Socket.gethostbyname

The code is as follows: /*** Recursive method for fast sorting* @param $seq* @return Array*/function Quicksort ($SEQ){if (count ($seq) > 1) {$k = $seq [0];$x = Array ();$y = Array ();$_size = count ($SEQ); Do not use the count ($SEQ) in loop

About the split and join methods of string Os.path.splie ()/os.path.join () for importing OS modules seems to be a different processing mechanism, but functionally identical. 1.string.split (str= ", Num=string.count (str)): delimited by str, the

Definition of a linked list:A linked list (linked list) is a data structure consisting of a set of data elements called nodes, each of which contains information about the node itself and the address that points to the next node. Since each node

When dealing with polymorphic objects, just pay attention to its interface, Python does not need to display the writing (like Java) interface, in the use of objects first assumed that the interface, if not actually included, in the run error. The

Directly on the code: The code is as follows: #!/usr/bin/python#-*-Coding:utf-8-*- Import Urllib Import os,datetime,string Import Sys From BS4 import BeautifulSoup Reload (SYS) Sys.setdefaultencoding (' Utf-8 ') __baseurl__ = ' http://bj.58.com/' _

Let's say we're going to add a middleware of our own to log each request. The following is a specification-compliant middleware, which accepts a WSGI app in the constructor and __call__ returns a Wsgi app. The code is as follows: Class

The Python sys module contains functions related to the Python interpreter and its environment, which you can use to view the methods and member properties in him through Dir (SYS). The code is as follows: Import SysPrint dir (SYS) Result The

The code is as follows: #!/usr/bin/python3.2Import Os,socketImport UrllibImport Urllib.request,threading,timeImport Re,sysGlobal MANHUAWEB,WEBURL,FLODER,CHAPTERBEGIN,CURRENTTHREADNUM,THREADCOUNT,MUTEX,MUTEX2 Weburl= "Floder=

If you want to use the Easy_install tool, you may need to install Setuptools first, but the cool way is to use the ez_setup.py script: The code is as follows: Wget-q http://peak.telecommunity.com/dist/ez_setup.pyPython ez_setup.py After

Format Summary: Format description format description %% percent sign% (extra% is escape effect) /td> % c character and its ASCII code %s

first, use the built-in method and decorator method to get the class name, function name The case for getting the name of a function in Python is internal, external, well-fetched from the outside, using the object pointing to the function, and then

Enter the radius, calculate the circumference, area, and sphere volume of the circle, and draw the circle. The data for the drag bars, input boxes, and image controls are consistent! Fedora under test pass The code is as

1. How to take the time of the past: The code is as follows: #!/usr/bin/python Import time#取一天前的当前具体时间Time.strftime ('%y-%m-%d%T ', Time.localtime (Time.time () -24*60*60)) #取15天前的当前具体时间Time.strftime ('%y-%m-%d%T ', Time.localtime (Time.time () -15*