Python

Reference: http://cuiqingcai.com/990.html1. Non-object-oriented modeFull Code 1:#-*-Coding:utf-8-*-Import reImport Urllib2Import UrllibImport ThreadImport timepage = 1url = ' http://www.qiushibaike.com/hot/page/' + str (page)User_agent = ' mozilla/4.

recently watching video learning, the teacher assigned a homework, about how to use Python to merge multiple Excel, the teacher wrote the code I feel more complex, the following is my own improvement after the simpler way. There are two main ways to

In the process of learning Python, the syntax of Lambda is often confusing, what is lambda, why use lambda, is it necessary to use lambda?Here are answers to the above questions.1. What is lambda?Look at an example:1 g = lambda x:x+1Take a look at

ObjectiveYesterday to brush the public number to see a description of Py elegant grammar article, the heart itch to get home and began to try to learn the for else Statement,yield and PY version of the three-mesh writing. In this section of the list

Generator (Generator)1. Generator is a container2, the generator can be the edge of the loop calculation3. Generator can save memory4. The generator is an iterative object5. The function that becomes generator, executes at each call, next()

LambaAdd:Example:The reduce usage in the previous example:Built-in functions, there are 137 of functions, classes, etc.The first letter of the class is capitalizedTo view the methods of a function or class:Common built-in functions:1. Return the

I. Introduction to the Random moduleThe random function in the Python standard library can generate randomly floating-point numbers, integers, strings, and even help you randomly select an element in a list sequence, disrupting a set of data, and so

Addition:Enter the following code:>>>1+1>>>1.0+1Subtraction:Enter the following code:>>>1-2>>>1.0-2Multiplication:Enter the following code:>>>2*4>>>2.0*4Division:Enter the following code:>>>2/4>>>2.0/4>>>2//4>>>2.0//4Rounding:Enter the following

Web site Implementation validation feature decorator:Import timeuser,passwd= ' Alex ', ' abc123 ' def Auth (func): def wrapper (*args,**kwargs): print ("Wraper func args: ", *args,**kwargs) username=input (" Username: "). Strip ()

The first step is to download the installation Python first, I downloaded the 3.5 version, this version, comes with the PIP tool, does not need to install the pip:)Link Address: Python 3.5Second step, execute pip install selenium install Selenium

#OS Module#The OS module is the operation of the operating system, which must first be imported into the module:ImportOS#GETCWD () Gets the current working directory (the current working directory is the folder in which the current file is located

There are 3 built-in data structures in Python: Lists, Ganso, and dictionaries:1. ListA list is a data structure that handles a set of ordered items, that is, you can store a sequence of items in a list.The items in the list should be included in

Start with a light:　　Good memory is worse than bad writing, it is really this truth!!First, understand the programmingThe purpose of programming:　　　　Programming languages are used to develop programs that let computers work and liberate your

The first collection, used to look at1. Euclidean distance (Euclidean Distance)Euclidean distance is one of the easiest distance calculations to understand, derived from the distance formula between two points in Euclidean space.(1) Euclidean

#自定义函数:Import OSPath= "D:\\temp_del\\a"def GCI (path):"" "This is a statement" ""Parents = Os.listdir (path)For the parent in parents:Child = Os.path.join (path,parent)#print (Child)If Os.path.isdir (child):GCI (Child)# Print (Child)ElsePrint (child)

Python stack operation example for implementing the basic data structure, python Data Structure This example describes how to implement the stack operation in the basic data structure of Python. We will share this with you for your reference. The

Global interpreter lock -- GIL, global interpreter -- gil Reference blog: https://www.cnblogs.com/mindsbook/archive/2009/10/15/thread-safety-and-GIL.html Https://www.cnblogs.com/MnCu8261/p/6357633.html Http://python.jobbole.com/87743/I. Preface In

How to Use Python to write a calculator software with python This calculator is developed using the Python tkinter module. Results:   1 import tkinter # import tkinter module 2 3 root = tkinter. tk () 4 root. minsize (280,500) 5 root. title ('Lee

[Reprinted] Use signals to monitor the changes in the Django model object field value, django Field Reprinted Source: http://blog.csdn.net/pushiqiang/article/details/74949465   The function of the Django signal (Signals) is similar to the action of

Flask: timed task development and flask Development   I recently developed my interface testing platform, but met a requirement and needed to develop a scheduled task. Therefore, Baidu searched for a pFlask-APScheduler and started my first learning,