books about python programming

Python scope, local and global variables First understand that Python can change the scope of the code snippet is def class Lamda If/elif/else try/except/finally for/whileThe search path for a variable is: local variable-global variableTry the following code:x=100def Main (): x+=1 print(x) main ()When running the above code, there will be an error, for what, you need to understand the scope, local va

profileChingFreelance translator; 2000 Professional translation, master translation of books, occasional translation of press releases, soft articles, published translations of 40 more than, including the C + + Prime plus Chinese version of the CCNA Learning Guide, CCNP Route Learning Guide, model-oriented Software architecture: Model system Android App UI design mode "VC choice: Who is the next 1 billion-dollar company," and so on, a total of more t

Introduction to the proxy mode and template method Mode Programming in the Python design mode, and the python Design Mode Proxy ModeThe Proxy mode is A common design mode. It is mainly used to provide A 'agent' access to an object (such as B) (such as A) through an object (such as. For example, if an object is not directly referenced, the proxy acts as an interme

Python combination mode and responsibility chain mode programming example, python example Combination ModeWe regard the Composite mode as a complex attribute structure. In fact, there are basically three roles: trunk (defining some operations for leaf) and branches (many branches on the trunk) and the leaf (the object that the trunk wants to operate on), the Comp

Python programming binary method for bubble Algorithm + quick sorting code example, python binary method The example in this article is mainly the Python programming binary method for implementing the bubble Algorithm + quick sorting. The details are as follows. Bubble algor

port, port multiplexing, and so on, a little understanding of TCP, know each field of the protocol, understand the three-time handshake. 2. Understand the basic server concurrency model, such as multi-process, multi-threading, Io multiplexing 3. Learn about some network libraries such as twisted Actually want to study in depth still have to read "UNP" "TCPv1" such as books, but this kind of language is based on C. I write C + + programs under Linux,

1. Python socket module built-in method2, the TCP server pseudo-code3. TCP Client Pseudo-code4. Socket Module Properties5. A simple TCP client and service-side code:# encoding:utf-8from Socket Import *from time import ctimefrom datetime import *# define TCPServer listening port number host = ' 0.0.0.0 ' port = 2 1567ADDR = (HOST, PORT) buffsize=1024# Initializes a TCP Sockettcpsvrsock = socket (af_inet, Sock_stream) tcpsvrsock.bind (ADDR) Tcpsvrsock.l

Source: KDnuggets2018 Year Top analysis/Data science/ML software surveyEnter the group: 125240963 can get 0 basic primer Data set and 10 sets of PDF Books Oh!Note: The average number of tools used per respondent is 7, slightly higher than the 6.75 in the 2017 pollEven more frightening, this fire is not only in the programmer's circle burning more and more prosperous, and even burned to the programmer's circle, from the primary school to the old driver

does not meet the requirements of the subclass, it can be overridden, which is called the override of the method, also known as the override of the method. instance variable: A variable defined in a method that acts only on the class of the current instance. inheritance: A derived class (derived class) that inherits the fields and methods of the base class. Inheritance also allows the object of a derived class to be treated as a base class object. For example, there is a design where an

Detailed description of object generation methods for PHP object-oriented programming, and detailed description of python Object-Oriented Programming This article describes the object Generation Method of PHP object-oriented programming. We will share this with you for your reference. The details are as follows: Object

Major in Science and Engineering Chemistry and materials, with a certain mathematical foundation but no programming experience. Major in Science and Engineering Chemistry/materials, with a certain mathematical foundation but no programming experience. Reply content: I think it is Python. I have told people more than once that for non-computer professionals, the

the original function function, you can also after itform Four: The parameter has a return value1 defOuter (func):2 defWrapper (STR1):3 Print("Adorner function 1")4RET =func (str1)5 Print("Adorner function 2")6 returnret7 returnwrapper8 9 #defines a function that has a parameter return valueTen @outer One defMain_func (str1): A return "Hello"+str1 - - the Print(Main_func ("Python")) - - - The results are as fol

. However, there are several parallel modes that can be implemented through the built-in module multiprocessing:Multi-process: for CPU-intensive programs, you can use multiprocessing Process,pool and other packaged classes to implement parallel computing in a multi-process manner. However, because the communication cost in the process is relatively large, the efficiency of the program that requires a lot of data interaction between processes may not be greatly improved.Multithreading: For IO-int

But what are Python and why are it the language of choice by many DevOps engineers?What is Python? Why are so many devops engineers choosing Python?Here is an explanation from the PSF (the Python software Foundation):Python is aninterpreted,object-oriented,High-levelProgramm

This article mainly introduces Python functional Programming Guide (i): Functional Programming Overview, this article explains what is functional programming overview, what is functional programming, why the use of functional programming