Python

#pip Install-i https://mirrors.aliyun.com/pypi/simple/pyssdbImportPyssdbc= Pyssdb. Client ('172.17.91.21', 8888) QueueName='mysqlreplaction_test'#clear the queue .c.qclear (queuename) C.qpush (QueueName,1) C.qpush (QueueName,2) C.qpush (QueueName,3)

Two points must be guaranteed before use:A MONGODB database is installed on the computer, and Python has the Pymongo package installed. B Open Mongod.exe1 Creating a ClientClient = Pymongo. Mongoclient (' localhost ', 27017)#pymongo. Mongoclient ()

Python third-party library OPENPYXL (2)Simple to useWrite a workbook>>> fromOpenpyxlImportWorkbook>>> fromOpenpyxl.compatImportRange>>> fromOpenpyxl.utilsImportGet_column_letter>>>>>> WB =Workbook ()>>>>>> Dest_filename ='empty_book.xlsx'>>>>>> ws1 =

The generator is characterized by working half-time, stopping to watch others work until someone kicks his butt, and it continues to work. The essence of this function is to use yield.The generator is a special iterator, so let's start by

Python Basic user input Username = input (' Please enter user name: ') What the hell is PYC? Python, like Java and C #, is a virtual machine-based language, and when we use Python Hello.py, is to tell the virtual machine I

100 semicolon Mode"""percent-semicolon mode%[(name)][flags][width]. [Precision]typecode (name) optional, used to select the specified keyflags optional, the values available for selection are: + Right-justified, positive before plus, negative

Seed/DHTTorrent files can be obtained by magnetic force to download, which is a matter of direct use of seed download, but less from the magnetic to the seed file a process. Peer: A client/server listening on a TCP port that implements the

Python has two well-known package management tools easy_install.py and PIP. In Python2.7 's installation package, easy_install.py is installed by default, and Pip requires us to install it manually.Compile and install PIP management tool here: https:

PYTHON specifies special variables with underscores as variable prefixes and suffixes._xxx cannot be imported with ' from Moduleimport * '__xxx__ System Definition NamePrivate variable names in the __xxx classCore style: Avoid using underscores as

Directory Variable Naming conventions Value types and reference types Operator Arithmetic operators Assignment operators Relational operators logical operators Member operators

In Python multiple inheritance, take advantage of super (). The parent class method, you can call all the parent classes, so that in the state of the override, the call to all the parent class again!Cases:Print"****** multiple inheritance using

What is HimalayaHimalaya FM is the domestic sharing platform, March mobile phone clients on-line, more than two years of mobile phone users have exceeded 200 million [1], become the fastest growing, the largest online mobile audio sharing

LRU algorithm in the back-end engineer interview, is a more frequent topic, this article with everyone, understand the LRU algorithm, and finally with Python easy implementation of an LRU algorithm based on the cache.What is a cacheFirst look at a

Environment: notepad++,python2.7.13Compile: Write the. py file first, and then run the script with the Python command in the terminal (the runtime terminal directory to be located in the running. py file directory)Exercise One:In the Python2 version,

# Put the resulting property value on the method @property# on the method of setting the property value @ property name. Setter# Two methods have the same name and are all property names#先写 @property Write the @ property name again. Setterclass

TCP three-time handshake and four-time waveFirst, let's describe what the transport layer is:1, three handshake1) Three-time handshake detailsFirst, the client (client) side sends the connection request message, the server (server) segment accepts

First, local variables and global variablesName= ' LHF ' global variablesDef change_name ():Global name globally variable without global is local variableName= ' Handsome a ratio 'Print (' Change_name ', name)Change_name ()Print (name)Name= ' LHF

The original love coding, will program the nuclear power engineer. Personal blog Address: zhihu.com/people/zhong-yun-75-63Learn some tricks to maximize the performance of Python programs and avoid unnecessary waste of resources.1. Using Local

I. Analysis of requirements Creation of 2 schools in Beijing and Shanghai analysis: Creating school Classes Create Linux, Python, go 3 courses, Linuxpy opens in Beijing, go in Shanghai Analysis: Create course classes, create courses

1. Import socketserver,threadingtcpserver support multi-Client connectionimport socketserverclass Mysocket(socketserver.BaseRequestHandler): def handle(self): while True: try: