Python

high-end automated test Exchange Group : 310924886 ' UTF8 ' codec can ' t decode byte 0xe4 in position 0:unexpected end of data #-*-Coding:utf-8-*-From selenium import WebdriverImport Time,osImport CodecsImport SysSource=open

Summarize the others ' learning notes for Python:1. Output redirection to the log file:F= Open ("LogFileName", "a")Print >> A, "the output of the content, mainly to have the previous redirection number >>"F.close () #注意关闭资源2. Using the From __FUTURE_

Reference text:Http://www.liaoxuefeng.com1. Functions(1) Python's commonly used built-in functions:A. Absolute value return function: ABS (x)B. Comparison function: cmp (x, y)C. Data type conversion function: Int (), float (), str ()(2) Assigning a

Import Sysdef merge (Nums,first,middle,last):Lnums = nums[first:middle+1]Rnums = nums[middle+1:last+1]Lnums.append (Sys.maxint)Rnums.append (Sys.maxint)L=0R = 0For I in Range (first,last+1):If LNUMS[L] Nums[i] = Lnums[l]L+=1ElseNums[i] = Rnums[r]R+=1

A guide is summarized here, mainly for students who have just started to do data mining and data analysis. Say statistical analysis tools you must think of something like Excel,spss,sas,matlab and R language. The R language is the fire in this,

SocketSmall servers:#!/usr/bin/env pythonimport sockets = Socket.socket () host = Socket.gethostname () port = 1234s.bind ((host,port)) S.listen (5) While true:c,addr = S.accept () print ' Got connection from ', Addrc.send (' Thank-for-connecting ')

Recent data mining experiments, write a K-means Algorithm , it is not difficult to write, the process of writing to think of Python must have a package, although senior said not to use, but himself also finished, and with the package, is not very

The use of functions in Python is simpler, and here are some notable points to note: inline functions For example: # Coding:utf-8 def foo (): def Bar (): Print ' Bar () called. ' Print ' foo () called. ' foo () bar ()The call to bar

1. Create a list1 >>> a = ["hacker", "geek", 4,5,6] 2 >>> a3'hacker ' Geek', 4, 5, 6]2. Assignment operation1>>> a = [1, 2,"Hacker","Geek", 4,5,6]2>>>a3[1, 2,'Hacker','Geek', 4, 5, 6]4>>> a[1]="Hello World"#下标是以0开始, modify the

#coding: Utf-8#数据交换x = 6y = 5X, y = y, XPrint XPrint Y#相当于:?print "Hello" if False else "world"#一种方式绑定不同类型的数据NFC = ["Packers", "49ers"]AFC = ["Ravens", "patriots"]Print NFC + AFCPrint str (1) + "World"print ' 1 ' + "world"Print nfc,1#注意浮点除法Print 5.0/

File methodWrite:#!/usr/bin/env pythonf = open (' Somefile.txt ', ' W ') f.write (' Hello, ') f.write (' world! ') F.close () F = open (' Somefile.txt ', ' R ') print F.read (5)HelloUse the basic file method:#!/usr/bin/env pythonf = open (R '

1. This sentence is a redirect, if sse_id is empty, directed to Studentscorecenter () This function returns the Uurl (back to the Student score center).2.G is a fixed use of flask, used to save the login information, you can simply understand that:

Python memory management and python Memory Management 1. in Python, integers and short characters are cached by Python for reuse. When we create multiple references equal to 1, all these references are actually directed to the same object. a = 1b = 1

Three methods for customizing the user model of django: djangouser Django version: 1.7.1 The simplest recommendation:Use abstractuser to expand fields Copy codeThe Code is as follows:Profiles/models. py From django. db import modelsFrom django.

KNN algorithm python implementation and simple digital recognition methods, knn algorithm python Recognition This article describes the implementation of kNN algorithm python and simple digital recognition methods. Share it with you for your

Use of pytesser and pytesser Pytesser and its dependency plug-in: Link: http://pan.baidu.com/s/1i3zgpjJ password: ueyy When I encountered a verification code recognition problem while learning Webdriver, I asked du Niang that pytesser can be used

Python Implementation of Naive Bayes AlgorithmAdvantages and disadvantages of algorithms: it is still effective when there are few data and can be used to deal with multiple types of problems. Disadvantages: The preparation method for input data is

[PythonCode] scan the alive IP address of the LAN Intranet hosts are automatically assigned ip addresses. Sometimes you need to check which ip addresses are in use and write a simple script. Linux and windows can be used, with multithreading to ping1

Basic usage of python3 Multithreading # Coding = utf-8import threading # import threading package from time import sleepimport timedef task1 (): print ("Task 1 executed. ") sleep (1) def task2 (): print (" Task 2 executed. ") sleep (5) print ("

Beginning Python From Novice to Professional (6)-function usage Function usage Define functions: #!/usr/bin/env pythondef hello(name):return 'Hello, ' + name + ''print hello('world')print hello('Gumby') Hello, worldHello, GumbySample Fibonacci