Python

1. Inheritance of ClassesInheritance of ClassesInheritance is one of the important features of object-oriented,Inheritance relationship inheritance is a parent-child relationship relative to two classesSubclasses inherit all the public properties

---restore content starts---A Module introduction1. What is a module?#常见的场景: A module is a python file that contains a set of functions, such as spam.py, which is named spam and can be used via import spam. #在python中, the module is used the same way,

definition : The usual architecture of a Python program is to divide a program into a collection of source code files and a way to connect those parts together.The program architecture of Python can be expressed as:A python program is a system of

UnitTest is a module in the standard library that comes with Python, which includes:1, TestCase class2, Testsuite class3, Testloader class4, Texttestrunner class5, Texttestresult classThe following are the test cases for the six assertion methods in

A simple guess number gameThe first two days in the forum to answer questions, see a guess the number of games, on the original basis changed a bit, play a play.This program, the number range and the number of attempts is predetermined, of course,

The purpose of this section is to have a basic concept for the loop object when you are reading the Python program.The Loop object does not exist with the advent of Python, but it is developing rapidly, especially in the Python 3x era, where the

Ython Calculation of KL divergenceImportNumPy as NPImportscipy.statsx= [Np.random.randint (1,11) forIinchRange (10)]Print(x)Print(Np.sum (x)) PX= X/np.sum (x)#NormalizationPrint(px) y= [Np.random.randint (1, 11) forIinchRange

#!usr/bin/env python#-*-Coding:utf-8-*-__author__ = "Samson"# # #类变量与实例变量Class Role:n = 123# class variable, stored in the class, not stored in the instance, can be used to save spacedef __init__ (self, name, role, weapon, Life_value = +, Money = 150

1. Summary of function Review#function--2 days #definition and invocation of functions #def function name (formal parameter): #function Body #return value #Call Function name (argument) #standing at the angle of the

Python OS File/directory methodThe OS module provides a very rich method for working with files and directories. Common methods are shown in the following table: Serial Number Method and Description 1 Os.access (

This article describes the open and OS basic usage in the IO file. This time with a game landing basic interface to do introduction, to introduce.There are many ways to implement storage. For example, the dictionary and list, but the dictionary, the

Compiling the installation from source code Download the latest version from the Python website Unzip tar -xzvf Python-3.6.4.tgz , modify the package name according to the version number cd Python-2.7.9/ LDFLAGS="-L/usr/lib/x86_6

1 #Coding:utf-82 """3 download fried egg to local, through selenium, regular expression, PHANTOMJS, BeautifulSoup realization4 """5 6 ImportRe7 ImportOS8 9 fromSeleniumImportWebdriverTen fromSelenium.webdriver.support.waitImportwebdriverwait One

Presumably now everyone learning Python will use 3.0 and more versions, although the 2.X version is still a lot, but these two years with some open source projects no longer support 2.X version, 3.X has become a trend.It is in this background, I

Learning + interest combined to crawl pictures (feeling also OK, is a bit slow, 135 pictures took 37 seconds, another day with multi-threaded try):#encoding =utf-8Import Requests,re,os,timeFrom BS4 import BeautifulSoupClass Stone ():#获取照片urldef

Reprinted from xiake200704 final editor xiake200704First, IntroductionPy2exe is a tool for converting a Python script into a standalone executable program (*.exe) on Windows so that you can run the executable program on a Windows system without

Serialization:#!usr/bin/env python#-*-Coding:utf-8-*-__author__ = "Samson"Import Json,pickle#json能用于其他语言中, only some simple data types, such as dictionaries, can be serialized, and pickle can only be used in Python to serialize all data typesdef

In doing data processing, need to use different methods, such as feature standardization, principal component analysis, and so on will be reused some parameters, Sklearn provides a pipeline, can solve the problem at onceFirst show the usual way

01Python basics _ 09 exception, 01Python basics _ 091. try & try t Original program: 1 import math2 3 while True:4 text = raw_input('> ')5 if text[0] == 'q':6 break7 x = float(text)8 y = math.log10(x)9 print "log10({0}) =

Build a one-hop Python environment and a Python Environment In the latest mini-program, a small game called "One hop" was launched. Once launched, it immediately burst into a circle of friends, and some great gods also through Python to realize the