python re findall example

Python implements an example of the DES encryption and decryption method, pythondes This article describes how to implement DES encryption and decryption in python. Share it with you for your reference. The specific analysis is as follows: Function: encrypt Chinese characters and other stringsThe key length and plaintext length can be unequal.Only code is pasted

the listX=0 # assigns X to 0For I in TL:I.start ()The results of this implementation are different from those thought, and the results are as follows: [Root@361way lock]# python lock1.py30303030303030303030Why are the results all 30? The key is global row and Time.sleep line. 1, since x is a global variable, the value of x after each cycle is the result value after execution; 2, because the code is multi-threaded operation, so in the sleep waiting

This article mainly introduces the Python regular expression simple example, and analyzes the problems encountered in the Python simple string regular expression matching test and related precautions, for more information about Python regular expressions, see the next article, for more information, see This

one, python in the file, folder operations often used in the OS module and Shutil module common methods. 1. Get the current working directory, that is, the directory path of the current Python script work: OS.GETCWD () 2. Return all files and directories under the specified directory name: Os.listdir () 3. function to delete a file: Os.remove () 4. Delete multiple directories: Os.removedirs (r "C:\

In Python, you can use the Pickle module to convert an object to a file, save it on disk, and then read and restore it when needed. The specific usage is as follows: Pickle is a common serialization tool in the Python library that allows you to export a memory object as a text or binary format as a string, or to write to a document. Later, you can revert from a character or document to a Memory object. The

This article mainly introduces the example of ARP attack code written in python. For more information, see Note: to use this script, you need to install the scapy package. It is best to use it on the linux platform, because the scapy package always has various problems when installed on windows. The code is as follows: # Coding: UTF-8# Example: sudo

Everyone will encounter one thing in their life and will not care before it appears, but once it comes, they will find it extremely important and need to make a major decision in a short time, that is, give a name to your new baby. The following article describes how to use Python crawlers to give a good name to a child. For more information, see. Everyone will encounter one thing in their life and will not care before it appears, but once it comes, t

A, python in the file, folder operations often used in the OS module and Shutil module common methods.1. Get the current working directory, that is, the current Python script work directory path: OS.GETCWD ()2. Returns all files and directory names under the specified directory: Os.listdir ()3. function to delete a file: Os.remove ()4. Delete multiple directories: Os.removedirs (r "C:\

Use the example to explain how to optimize the database query by using the prefetch_related () function in the Django framework in Python, pythondjango Instance background Assume that the Personal Information System must record the home, residence, and city of each individual in the system. The database design is as follows: The content of Models. py is as follows: from django.db import models class Provin

The example of this paper describes the implementation of the Python Baidu post-paste network crawler. Share to everyone for your reference. Specific as follows: Full instance code click here to download this site. Project content: Written in Python, Baidu paste the Web crawler. How to use: After you create a new bugbaidu.py file, and then copy the code inside,

A simple use of re.search to match a keyword in a string[Email protected] ~]# vim ceshi.py#!/usr/bin/env python#coding:utf-8import reerr= ("stderr: ' Permission denied (PublicKey) fatal:could not read from remote Repository ") Matchpro = Re.search (R ' Permission denied \ (publickey\) ', err, re. M|re. I) Print Matchpro.group ()[email protected] ~]#

Objective Every operational officer should be aware of the configuration of the machine he is managing, because it is very helpful for us to deal with the problem quickly, for example, as the business grows, suddenly some machines load up badly, at this time to troubleshoot reasons, in addition to from the application, architecture analysis, the current hardware performance analysis should be an essential link, Today we will not use the third party m

When you learn Python, you will encounter the fact that Web site content is dynamically requested by Ajax and asynchronously refreshes the generated JSON data, and it is not possible to crawl the contents of static Web pages before using Python. So this article is going to tell you about crawling Ajax dynamically generated data in Python. As for the way to read

: ', Lock.acquire () print ' Second try: ', Lock.acquire (0) Execution results: $ python threading_lock_reacquire.py Try:true Second Try:false Use Rlock to obtain multiple locks: Import Threading Lock = Threading. Rlock () print ' A: ', Lock.acquire () print ' Second try: ', Lock.acquire (0) Execution results: Python threading_rlock.py Tr

This article mainly introduces the method that Python uses regular expression to implement text substitution, analyzes the specific operation steps of Python using regular expression to realize text substitution with the example form, and the related usage precautions, the friend who need can refer to the following Three-way client programming in a sense is the

Example Analysis of partial function partial usage in python, pythonpartial This example describes the usage of partial function partial in python. Share it with you for your reference. The details are as follows: When a function is executed, all necessary parameters must be included for calling. However, sometimes the

This article explains the example code for writing a Python crawler to crawl a GIF on a comic, with sample code Python3, using the Urllib module, request module, and BeautifulSoup module, and the friends you need can refer to This article is to introduce the crawler is to crawl the cartoon gif funny image, convenient offline viewing. The crawler was developed by python3.3, and was mainly used in Urllib, re

Note: To use this script, you need to install the scapy package.It is best to use it on the linux platform, because the scapy package always has various problems when installed on windows. Copy codeThe Code is as follows:# Coding: UTF-8# Example: sudo python arp_dos.py 192.168.1.103 From scapy. all import ARP, sendImport OS, re, sys Def get_gateway_ip ():T = OS.

This example describes the use of sleep functions in Python. Share to everyone for your reference. Specific as follows: Sleep in Python is used to pause thread execution in seconds #-----------------------------------# name:sleep.py# author:kevin harris# last modified:02/13/04# Description:this Python sc

This article mainly introduces the Python regular simple example, specifically analyzes the python's simple regular matching test for strings and related considerations, the need for friends can refer to the following The examples in this article describe Python's regular simple usage. Share to everyone for your reference, as follows: Quietly into the company's internal ued of a small group of