Python

A linked list consists of a series of structures that do not need to be connected in the memory. These objects are sorted in linear order. Each structure contains table elements and pointers to subsequent elements. The pointer to the last unit

1. Sort buckets Sort buckets in the range of 1-m in 1.1 If an array A contains N integers ranging from 1 to M, we can get A very fast sort by bucket sort ). Hold an array S, which contains M buckets and is initialized to 0. Then traverse array A and

1. Stack Stack is a table that only supports insert and delete operations in one position. It is the end of the table and is called the top of the Stack ). The basic stack operations include PUSH (in stack) and POP (Out stack ). Stack is also called

File Replication in python The python OS module has many file directory-related functions, but does not provide functions for directly copying files. Of course, you can copy files by writing both sides. You can use the shutil module to directly

Copy codeThe Code is as follows:/*** Calculate the distance between two points* @ Param _ lat1-start latitude* @ Param _ lon1-start longitude* @ Param _ lat2-end latitude* @ Param _ lon2-end longitude* @ Return km (rounding)*/Public static double

Copy codeThe Code is as follows:CODE = {'A': '.-', 'B': '-...', 'C ':'-.-.','D': '-...', 'E': '.', 'F ':'..-.','G': '--.', 'H': '...', 'I ':'..','J': '. ---', 'K': '-.-', 'L ':'.-..','M': '--', 'N': '-.', 'O ':'---','P': '. --.', 'q': '--.-', 'r ':'.

Copy codeThe Code is as follows:#! /Usr/bin/python# Coding: UTF-8# Write: JACK# Info: ftp exampleImport ftplib, socket, OSFrom time import sleep, ctime Def LoginFtp (self ):Ftps = ftplib. FTP ()Ftps. connect (self. host, self. port)Ftps. login (self.

Copy codeThe Code is as follows:#-*-Coding: UTF-8 -*-Import reImport urllibDef getHtml (url ):# Find the source code of the webpagePage = urllib. urlopen (url)Html = page. read ()Return htmlDef getImg (html ):# Regular ExpressionReg = r'src = "(.*? \

Copy codeThe Code is as follows:Import time Def block (file, size = 65536 ):While True:Nb = file. read (size)If not nb:BreakYield nb Def getLineCount (filename ):With open (filename, "r", encoding = "UTF-8") as f:Return sum (line. count ("\ n") for

Copy codeThe Code is as follows:Python 3.3.4 (v3.3.4: 7ff62415e426, Feb 10 2014, 18:13:51) [MSC v.1600 64 bit (AMD64)] on win32Type "copyright", "credits" or "license ()" for more information.>>> Cast = ["cleese", "palin", "jones", "idle"]>>> Print (

 Copy codeThe Code is as follows:#! /Usr/bin/python#-*-Coding: UTF-8 -*- From PyQt4.QtGui import *From PyQt4.QtCore import *From PyQt4.Qt import * Class CLabel (QWidget ):SignalLabelPress = pyqtSignal ()Def _ init _ (self, parent = None ):Super

Copy codeThe Code is as follows:"""If only commonImport urllib. requestHtml = urllib. request. urlopen ("http://www.sina.com"). read ()Print (html. decode ('gbk ')) The following error occurs:Builtins. UnicodeDecodeError: 'gbk' codec can't decode

Copy codeThe Code is as follows:#! /Usr/bin/env python# Coding: UTF-8### Show time in console#Import sysImport time Raws = '''.--.|'--'./||------.---''------.--- |---'..'-- ||.---'--.---'.---| --.'--'.--.'||.--.| -- |'--'.--.'-- |---''''. Strip

Different verification function check inputs are called based on different configuration files. You can change the logic of the verification function as needed. Copy codeThe Code is as follows:Def VerifyData (func ): Def VerifyInt (data ):Assert

Copy codeThe Code is as follows:Import socketDef open_tcp_socket (remotehost, servicename ):S = socket. socket (socket. AF_INET, socket. SOCK_STREAM)Portnumber = socket. getservbyname (servicename, 'tcp ')S. connect (remotehost, portnumber ))Return

Copy codeThe Code is as follows:From urllib. request import urlopenFrom urllib. parse import urlencodeImport tornado. httpserverImport tornado. ioloopImport tornado. web# Get key: https://www.google.com/recaptcha/whyrecaptchaPublickey = 'fill in

As mentioned in Tornado, only errors in path requests listed in handlers can be captured. If only one rule (r "/hello", HelloHandler) is defined, only requests with undefined paths such as/hello/other can be captured, the default 404 error page of

Copy codeThe Code is as follows:Import urllib2Import jsonImport stringUrl = 'HTTP: // m.weather.com.cn/data/101090502.html'Re = urllib2.urlopen (url). read ()We = json. loads (re) ['atherinfo']Print we ['city'], we ['date _ y']. center (30), we

The main function of this module is to provide objects that can store cookies. This module captures cookies and resends them in subsequent connection requests. It can also be used to process files containing cookie data. This module provides the

Test url: http://tieba.baidu.com/p/27141123322? Pn =Begin 1End 4Copy codeThe Code is as follows:Import string, urllib2 Def baidu_tieba (url, begin_page, end_page ):For I in range (begin_page, end_page + 1 ):SName = string. zfill (I, 5) +