Python

In this chapter, the author briefly introduces the Python data model, mainly Python's special methods. Like __len__, __getitem__. and use a card program to explain these methods.First, we introduce the difference between the following tuple and

PrefaceOverview of processes and Threads:　　Many students have heard that modern operating systems, such as Mac OS X,unix,linux,windows, are supported by "multitasking" operating systems.What do you mean "multitasking"? To put it simply, the

1 #!/usr/bin/python2 #-*-coding:utf-8-*-3 #Test Send mail 163 mailbox sent to QQ mailbox4 ImportSmtplib5 fromEmail.mime.textImportMimetext6 fromEmail.headerImportHeader7 fromEmail.utilsImportformataddr8 9Msg=mimetext ('Please enter the

Using Python's Hashlib module to extract MD5, online reference, think this is good, can be used as a module directly.#-*-coding:utf-8-*-import hashlib import sys import osdef md5hex (word): "" MD5 encryption algorithm, return 32-bit lowercase 16

1.re.search (): Search returns an object that finds results, and you can use the group () or groups () method to get a string that matches successfully.①group () returns the entire string with a successful match (ignoring the parentheses in the

Import SmtplibFrom Email.mime.text import Mimetext_user = "[email protected]" #发件人_pwd = "WCPXLDRTUTHAGJBC" #qq邮箱授权码_to = "[email protected]" #收件人msg = Mimetext ("Hellow,this is my first email!") #邮件内容msg["Subject"] = "Come form xieolei!"

A key-value data type, used as a dictionary of our school, to check the details of the corresponding page by strokes and letters.Grammar:#!/usr/bin/env python#-*-Coding:utf-8-*-info = {' stu1101 ': ' Tenglan Wu ', ' stu1102 ': ' Longze luola ', '

# coding:utf-8import requestsfrom BS4 Import beautifulsoupquesnumstr = str (Input ("Please enter search keywords:")) url = ' https:// Www.zhihu.com/search?type=content&q= ' +quesnumstrheaders = { ' user-agent ': ' mozilla/5.0 (Macintosh; Intel

Sublime Text 2 is a lightweight editor with distinctive features. Easy to use, increasingly popular with the general public. I have also started to use it recently. At the same time, I was learning something about Python in the near time. So start

1, the instance background ionic creates the dynamic list, according to ANGULARJS assigns the value 2, realizes the source code ionic Create List 1. Create a list of ionic Introduction: Ionic Creating dynamic lists, assigning values based on

The first learning crawler technology, in the knowledge of how to climb to the embarrassing encyclopedia of the jokes, so I intend to do a. Achieve the goal: 1, crawl to the embarrassing Encyclopedia of the Satin 2, to achieve every time to crawl a

Python automated test Eclipse+pydev Building a development environment C # is interesting because it is easy to write programs directly, without having to configure them, as soon as the visual Studio is installed. For beginners, this is a very good "

Recently learned Python in the requirements.txt, perhaps because it is too simple, the online did not search for a more complete introduction, so this article mainly introduced about Python requirements.txt related information, the need for friends

This article mainly describes the Python bulk modification of text file content of the relevant information, the need for friends can refer to Python bulk replacement file content, support nested folder import ospath= "./" for Root,dirs,files in

This article mainly introduces Python under the powerful renaming method of the OS module renames detailed information, the need for friends can refer to under the Python OS module powerful renaming method renames detailed in Python there are many

Python crawler: HTTP protocol, Requests library, pythonrequests HTTP protocol: HTTP (Hypertext Transfer Protocol): Hypertext Transfer Protocol. A URL is the Internet path for accessing resources over HTTP. a url corresponds to a data resource. HTTP

Python Excel and pythonexcel Python Excel requires you to download and install the xlrd and xlwt packages of the corresponding Python version for reading and writing Excel files. Installation Method: Decompress the package directly and cd it to the

Python 42nd-day socket, pythonsocket Use scoket to write a simple version of ssh Server: 1 #! Usr/bin/env python 2 #-*-coding: UTF-8-*-3 # Author calmyan 4 5 import socket, OS 6 7 s = socket. socket () # instantiate a socket 8 9 s. bind ('localhost',

Python re operation, pythonre 1. re. search (): search returns the search result object. You can use the group () or groups () method to obtain the matched string. ① Group () returns the matching string by default (ignore the parentheses in

Pipeline storage code and pipeline storage code When the last function in the spider returns an item, scrapy will call Process_item (self, item, spider ):Function and input parameters such as item and spiderData can be stored persistently here.My