Python

First, the decoration device1, why to use the adorner?The function of the adorner: the function of the original function is extended without modifying the original function and the calling method.Ii. principles of openness and closure1, the

Configparser1. Reading a configuration fileConfiguration file: Conf.ini [DEFAULT]Name = Gudon [Company_info]Company = FescoFesid = 99891234 [Department_info]Position = System ManagerAddr = south of the gate 14 import

Collection type:Function:--relational operations (intersection, set, difference)--Go heavy (with limitations)Definition method: Set ()Linuxers = {1,1.1, ' a ', (#)} # #集合内的值, only for immutable types, such as Int,str,float,tuplePrint (Type (linuxers)

Django comes with a user table: Auth_UserTo create a user instance:1.1 , Authenticate ()Provide user authentication, that is, verify the user name and password is correct, generally need username password two keyword parameters if certified The

Iteration means repeating one thing many times, as it does in a loop.        If an object implements the __iter__ method, it can iterate over the object. The __iter__ method returns an iterator, the so-called iterator, which is the object with the

Server-side configuration:Importsocket,subprocess,struct fromSocketImport*Server=socket (Af_inet,sock_stream) server.bind (('127.0.0.1', 8080)) Server.listen (5) whiletrue:conn,client_addr=server.accept () whileTrue:Try: cmd=CONN.RECV (1024)

Exercise: Take the download link under the link below for all of the king's Pirates.1 #Coding=utf-82 fromSeleniumImportWebdriver3 fromTimeImportSleep4 Importkeyword5 fromSelenium.webdriver.common.keysImportKeys6

In previous work, the report generated by the test Web interface was automatically implemented using the Send mail module in Python, and the report was automatically sent to the relevant people after all the automated tests were completedIn fact, in

List additions:1, List.append (object)Li = ['Zhangsan','Lisi','Wangwu']li.append ('Zhaoliu') Li: ['Zhangsan','Lisi','Wangwu','Zhaoliu']2, List.insert (Index, object)Li = ['Zhangsan','Lisi','Wangwu']li.insert (2,'Goudan') Li:

NO1:The process appears to be a subroutine, but during execution, it can be interrupted inside the subroutine, then execute another subroutine, and then return to execute at the appropriate time.Advantage:1. The greatest advantage is the high

Sub-footprint (low to high) per storage spaceNumeric string collection: unordered, that is, unordered storage index related information tuple: ordered, need to store index related information, immutable list: Orderly, need to store index related

official address Download installation packageClick to download will automatically identify your current system, or click on the platform you need to installOr choose a different versionperforming the installationAdvanced Options Description:Install

#列表: Increase, delete, change, check.names=[' N0 ', ' N1 ', ' N2 ', ' N3 ']‘‘‘Print (names)Print (names[0],names[2])Print (Names[1:3]) #切片Print (Names[0:3]) #切片, Gu Tou regardless of the end statement effect equivalent [: 3] can be ignored 0Print

Today, a script needs to traverse to get all the files under a specified folder, I remember the file traversal and directory Traversal was also implemented earlier, so look for a look, hey, do not see, see a fright, the original before I actually

" "module: Contains Python definition and declaration of the file, a py file is a Module 1, built-in module Python interpreter comes with Module 2, extension module, the module developed by Daniel, need to download using 3, custom module of the

Python IO programming Read-write files are common IO operations, and Python has built-in functions for reading and writing files, and the usage is compatible with C. Before reading and writing files, we must first understand that the

One. Several major codes:Ascii:1 bytes (byte), 8bit;GBK (GB code): 2 bytes, 16bit;Unicode (Universal Code): 4 bytes, 32bit;Utf-8: is a simplified version of Unicode with high efficiency and a minimum of 8bit per character. English--1 bytes; European

The virtual function can be realized through the Python ABC module;First at the beginning from ABC import Abcmeta, AbstractmethodExample:#!/usr/bin/python#coding=utf-8from ABC import Abcmeta, Abstractmethodclass Base (): __metaclass__=abcmeta

Describe the process by which browsers request dynamic resources through WSGI? send HTTP request dynamic resource to Web server After the Web server receives the request , a property is called through WSGI to the application framework

The main content of the study:1.list list (add and revise)Lists can store large amounts of data and do not require data types, representations [], separated by commas lst=[]Lists are the same as character channeling: indexes and slicesCommon