xfp module

#! /usr/bin/env python#-*-Coding:utf-8-*-#JSON (JavaScript object Notation, JS tag) is a lightweight data interchange format.# The JSON data format is actually the dictionary format in Python, which can contain arrays enclosed in square brackets.# in Python, there are modules--json and Picle modules that specialize in JSON format# Python's pickle module implements basic data sequence and deserialization.# through serialization of the Pickle

1. OS module: Provides an interface for invoking the operating systemOS.GETCWD () Gets the current working directory, which is the directory path of the current Python script work os.chdir ("DirName") changes the current script working directory, which is equivalent to the shell Cdos.curdir return current directory: ('. ') os.pardir Gets the parent directory string name of the current directory: (' ... ') Os.makedirs (' dirname1/dirname2 ') can ge

After the CentOS installation, some modules are turned on by default, but some modules are not required. IPV6, for example, is not yet popular in China.How do I close IPV6?The methods described below can also be used when closing other modulesThe first step:Find Module NameUse the command: Lsmod view the system-initiated module to find out what we needThe 2 modules associated with IPV6 are net-pf-10 IPv6Ste

Import ModuleNameIf you want to use a method in the ModuleName module, it is Modulename.method (Point method),For example, a method in ModuleName is set, then a modulename.set is used.If you want to use set directly, you can use the From ModuleName import set, and you can use the Set method directly.If you import in a module like this, you define the same method in this

The UUID is a 128-bit globally unique identifier (Univeral unique identifier), typically expressed in the form of a 32-bit string. Sometimes also called a GUID (Global unique identifier). Python has its own UUID module for the generation and management of UUID. (It is unclear from which version.) ）The UUID module in Python is based on the UUID of information such as MAC address, timestamp, namespace, random

Tag: Time () clock text datetime off tuple res--elementTime Module Time Module Time Representation format:1.格式化时间: 【 2018-01-01 01:00:00 】2.时间戳: 【 1518407077.940927 】 -> 秒数(从1970开始到现今)3.以元组方式表示，九个元素(格式化元组) 元素如下: (1) tm_year=2018, # 年 (2) tm_mon=2, # 月 (3) tm_mday=12, # 日 (4) tm_hour=11, # 小时 (5) tm_min=49, # 分钟 (6) tm_sec=13, # 秒 (7) tm_wday=0,

The Python3 Urllib module provides the ability to get a page.urllib.request.urlopen(url, data=none, [timeout, ]*, cafile=none, capath= None, cadefault=false, context=none) -url: The URL that needs to be opened-Data submitted by Data:post-Timeout: Set the access time-out for a websiteGet the page directly with the Urlopen () of the Urllib.request module, the data format of page is bytes type, need decode (

One of the most important functions in ansible is the ability to execute AD-HOC commands, and some people may not understand the meaning of the word ad-hoc, which means instant meaning, or arbitrary meaning.In contrast to the Ansible playbook function, playbook is suitable for batch deployment environments and is generally not frequently changed. The Ad-hoc command applies to operational scenarios such as business change, such as deploying a configuration file in bulk, restarting a service, inst

For cryptographic related operations, the 3.x replaces the MD5 module and the SHA module, mainly providing the SHA1,SHA224,SHA256,SHA384,SHA512,MD5 algorithm (SHA512 the most complex and safest)>>>ImportHashlib>>> m =hashlib.md5 () # Other encryption algorithms in the same vein>>> M.update ('666')>>>m.hexdigest () # 16 binary format Hash'Fae0b27c451c728867a567e8c1bb4e53'>>> M.update ('888')>>>m.hexdigest ()

HTML Download ModuleThe module is mainly based on the URL provided to download the corresponding URL of the Web page content. Use the module requets-html, add retry logic and set maximum retry times, while limiting access time to prevent long-time non-response resulting in program animation.According to the status code returned to determine if the access is successful return to the source code, or start ret

I. Overview of OS ModulesThe Python OS module contains common operating system features. This module is especially important if you want your program to be platform-agnostic.Second, common methods1, Os.nameThe output string indicates the platform being used. If the window is ' NT ', it is ' POSIX ' for Linux/unix users.2, OS.GETCWD ()The function gets the current working directory, which is the directory pa

Official recommended Standard installation methodManual:First step, Python step.py buildStep two, Python step.py installNetworking downloads Automatically:Pip Install xxx #python2PIP3 Install XXX #python3#联网自动查找下载前, Pip will be in the local related path to find whether, not only to find online.----------------------------------------------Internet Reference----------------------------------------# # for Linux # #sudo pip install sth# or explicit versionsudo pip2 install STHsudo pip3 install STHs

Brief introductionPython's Colorama module, which can be used to display different colors and backgrounds across multiple terminals, requires only the Colorama module to be imported, without having to assign colors like Linux every time.1. Installing the Colorama modulePip Install Colorama　　2. Common Format ConstantsFore is for font color, back is for font background color, style is for font formatFore:blac

YehaibinName=et. Subelement (New_xml,'name', attrib={'enrolled':'Yes'})#Create a name tag underneath the root and decorate it with attributesAge=et. Subelement (New_xml,' Age', attrib={'Hahah':'No'})#Add another labelSex=et. Subelement (New_xml,'Sex') Sex.text=' -'#. Text is a number in a labelet=et. ElementTree (New_xml)#Write File2. Re module-Regular expressionRegular expressions, fuzzy matching of strings, a lot of application scenarios in finding

PiL profile what is PILPIL: is the abbreviation of the Python Image Library, the module of the graphics processing. The main classes include Image,imagefont,imagedraw,imagefilterImport of PiLFirst you need to install the pillow packagePip Install PillowThen we can call the class in PiL.From PIL import imagefrom PIL import imagefontfrom PIL import imagedrawfrom PIL import ImageFilterPiL Common methodsOpen () #打开图片new (mode,size,color) #创建一张空白图片save

This is relatively simple, there is nothing to emphasize, if the JSON is returned directly according to the key value, if the page is to use the HTML lxml module XPath parsing.From lxml import htmlimport jsonclass getnodelist (): def __init__ (self): self.getdivxpath= "//div[@class = ' Demo '] " def use_xpath (self,source): If Len (source): root=html.fromstring (source) #html转换成dom对象 Nodelist=root.xpath (Self.

Configparser module:is the module used by the Python standard library to parse the configuration file.Format:Section: Using [] to mark section names: or =: using: or = Assignment[Websv]ip: ' 192.168.1.10 ' port:443name = ' root ' pw = ' root1990 ' definition: WEBSV called sectionThe same item can have multiple values:IP: ' 192.168.1.11 ', ' 192.168.1.12 ', ' 192.168.1.13 ' #待测试When the read configuration file is changed, the parameter name is automati

1 sys.argv command line argument list, the first element is the program itself path 2 sys.exit (n) exit the program, exit gracefully (0) 3 sys.version get version information for Python interpreter 4 Sys.maxint the maximum int value of 5 Sys.path returns the search path of the module, using the value of the PYTHONPATH environment variable when initializing 6 Sys.platform returns the operating system plat

1 #Cryptographic Modules2 ImportHashlib3 4 #MD5 encryption MD55 #1. Initialize the MD5 module to generate the MD5 object6 #2. Introduce the data update to be encrypted7 #3. Get the encrypted value Hexdigest8m =hashlib.md5 ()9M.update ('Hello World'. Encode ('UTF8'))#The default character encoding in Python3 is UnicodeTen Print(M.hexdigest ())#5EB63BBBE01EEED093CB22BB8F5ACDC3 One A #SHA Encryption sha256 The most call mode - #1. Initializing the Sha25

There are four main classes of logging module logging: Logger,handler,formatter,filterLogger provides an interface that the application can use directly, and each program obtains a logger before outputting the informationHandler sends the log record (created by logger) to the appropriate destination output, handler can output the information to the console, or output the information to a file, and send the information to the networkFormatter determini