Python

The previous article wrote a simple single-threaded simple chat room with a question and answer. This time we use the Socketserver module to build a multi-threaded asynchronous chat room. 12345678910111213141516171819

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After the creation of the Django Project and the app, you can start writing the site app Code, which demonstrates the Django routing mapping feature by displaying a welcome title for the registration page.1) First establish a route response function

First, Python Installation1. operating system:Win7 system2. Download The Python installation package, choose 2.7 version and 3.6 version can be ( preferably installed 2.7 version stable ) Official website: https://www.python.org/3.Python

In view of the performance requirements, I used the most in the work of C + +, however, the work often have some validation work, the performance requirements are not high, but the efficiency of the completion of higher requirements, for such work,

Creates Macintosh just wrote the Py, and the progress bar is not very satisfied, and is single-threaded, so modified to multi-threading, if the network fast, 5 minutes full download completely, the site is not good concurrency, and often access,

Use the Up,down button in the lower right corner of the keyboard to handle the page scroll bar This method is very flexible to use very convenient!!!! fromSeleniumImportWebdriverImport Time fromSelenium.webdriver.common.keysImportKeys#visit

‘‘‘Created on December 9, 2016@author: Jiangxh‘‘‘#可用内置函数代替DEF reverse (L, left, right):For M in range ((Right-left)//2):temp = L[right-1-m]L[RIGHT-1-M] = L[left+m]L[LEFT+M] = Temp‘‘‘does not account for extra memory, the array shifts to the left n‘‘‘

# 1. Determine if a string is symmetric, such as: Abccbadef is_symmetrical (str): length = Len (str) for index in range (LENGTH/2): if str[index] = = Str[leng Th-index-1]:p asselse:return falsereturn True if __name__ = = "__main__": print is_

Brief introduction Crawler is a program that automatically crawls Internet information. Its value is the Internet data for me all. Using crawled data, you can do a lot of things, such as: You can do data statistics, contrast, you can use the

In our daily surfing the Web page, often see some good-looking pictures, we would like to save these images to download, or users to do desktop wallpaper, or used to make design material. Our most common practice is to choose Save as by right mouse

Main logic: 1. Determine a string ls containing uppercase and lowercase letters, data, length L = 26+26+10 = 62 2, initialize l**n integers and push into redis as a sequence 3, when the need to convert a long URL, first from the above sequence of

Python read-in files and simple use of time/sys modules The use of some standard library functions is also to be learned, such as: Os/re/sets/string/queue/socket Python code #!/usr/bin/python Print ord (' a ') print CHR #字符和整型互相转换

There are five states of thread New, ready, running, blocked, dead. There are three cases of blocking: Synchronous blocking refers to a state in a competitive lock, which enters this state when a thread requests a lock, and resumes to a running

Tag: ACK This order function uses content display default HarThe two settings that are important in Python development are mentioned Above.One is the default setting for codecs defaultencodingImport sys>>> sys.getdefaultencoding ()' ASCII 'The other

After the creation of the Django project and the app, you can start writing the site app code, which demonstrates the Django routing mapping feature by displaying a welcome title for the registration Page.1) first establish a route response function

Python standard library 06 Sub-process (subprocess package) details, pythonsubprocess The content here is based on the Linux Process and Linux text stream. The main function of the subprocess package is to execute External commands and programs. For

Use python to implement the basic functions of the wc command program. The basic python code is used to implement the basic functions of the wc command program in Linux.   #! /Usr/bin/env python # encoding: UTF-8 # Author: liwei # Function: wc

Case study: Write the logon Interface 1. Enter the user name to log on 2. The welcome information is displayed after the authentication is successful. 3. Lock after three wrong passwords 1 # Author BigD 2 import OS, sys 3 4 I = 0 5 while I  

Encryption and decryption Based on rsa in Python2.6, python2.6rsa Generate the private key of the public key: #-*-Coding: UTF-8-*-import rsaimport base64 (public_key, private_key) = rsa. newkeys (1024) print (chr (10) + "Public Key:") print