Python

This paper mainly introduces the simple implementation method of writing socket Server and Client using Python language.1.PythonIntroduction to Socket ProgrammingSockets are often also referred to as sockets, and applications usually make requests

Python expression-matching process:The regular expression engine compiles regular expression literals to get a regular expression object, and then the regular expression object matches the text to match, resulting in matching results, such as

Principle 1: Not optimizedPrinciple 2: Do not optimize those unimportant parts (otherwise it will decrease readability)Solution:1. Using functions, local variables are much faster than global variables. Use functions as much as possible, such as

Lite version:Transfer value: Local variable of the function is changed without affecting the local variables of the keynote functionAddress: Local variable of the modulated function will affect local variables of the keynote functionPython parameter

Original: http://www.cnblogs.com/leonwen/p/5158947.html　　The algorithm is ported by MATLAB (see the previous blog post for details). But the final output is inconsistent with MATLAB, it is found that in the invocation of the internal function Eig to

Recently encountered Os.system () execution System command, the Internet collected a bit of information, organized as follows, in case of a rainy days, but also hope to help some people.The relationship between the return value of Os.system (cmd) in

This section focuses onHandling drop-down boxesSwitch_to_alert ()Accept ()The dropdown box is one of our most common page elements, for the general element, we only need to position one at a time, but the contents of the drop-down box needs to be

　　Any function that uses yield is called a generator, such as:Python code def count (N): While n > 0: yield n #生成值: n N-= 1 Another argument: The generator is a function that returns an iterator, and the difference from a

In fact, we have already used the drawing of the image in the front, such as:Io.imshow (IMG)This line of code is to use the Matplotlib package to draw the picture, after the successful drawing, return a matplotlib type of data. To display the drawn

Recently in the Nagios alarm mailbox Exchange to 163, Sina this free mailbox top, before used msmtp can also send mail, now estimate is their system is upgraded, can only use TSL encrypted connection, and msmtp how configuration is not available,

Beginner python ~\ (≧▽≦)/~ la laAs a beginner , I chose to use virtual machines to learn python.1. Learn python under a Linux virtual machinepython3.5 Download and install[Email protected] ~]# wget https://www.python.org/ftp/python/3.5.0/Python-3.5.0

IntroductionPython is a dynamically-interpreted programming language. Python can be used on a variety of operating systems, such as Windows, UNIX, and Mac, or in Java,. NET development platform.Characteristics1. Python is developed using the C

When it comes to digital image processing, perhaps most people will think of MATLAB, but MATLAB has its own shortcomings:1, not open source, the price is expensive2, the software capacity is large. Generally more than 3G, high version even up to 5G

Python3.2 simulates webqq login and python3.2webqq Login This is an example code for simulating webqq login using python. The Code is as follows: Import hashlibfrom urllib import request, parsefrom http import cookiejarimport re, random, timeimport

Before using django, let's take a look at these materials to cheer yourself up ~, Django look at these If you go to djangoproject.com, you will find the following explanation of Django:"Django is a high-level Python Web framework that encourages

Let's talk about some ideas about Python verification code recognition and some ideas about python. Search in baidu using python and the keyword "Verification Code". You can find many articles about verification code recognition. I have taken a

Python uses the urllib2 module to write a simple example of crawler, pythonurllib2 When talking about python as a web crawler, you have to talk about the powerful component urllib2. In python, The urllib2 component is used to capture webpages.

Python crawler entry (1): python crawler entry Biji is related to crawlers. Originally, he wanted to write in java and also wrote a few crawlers. One of them was the user information of Yiyun music, which crawled about more than 1 million, the

Interpretation of Flask source code (1) and flask source code FlaskIs a lightweight Web application framework written in Python. Flask is only a bridge between Werkezug and Jinja2. The former implements a suitable WSGI application and the latter

Python memory NoSQL Database #!/usr/bin/python#-*- coding: UTF-8 -*-## memdb.py# python memory db## 2015-12######################################################################### The MIT License (MIT)# http://opensource.org/licenses/MIT##