Python

Since we're going to demonstrate with Pygame, his coordinate system is the y-axis downward, so here we also use the Y-downward coordinate system.Calculated Sina and Cosa, sinusoidal contrast oblique, Yu Ying ratio oblique, the hypotenuse can be

Development background:Prior to an internship in an IDC company, responsible for server aftermarket, often use ping,tracert,tcping and other commands to do some preliminary diagnosis, to determine the server problem in what aspect. So I want to

02, the application of the function name (the first object).# 1, the direct print function name gets the memory address of the function # Print (FUNC1)#2, the function name can be assigned a value operation.# def func1 (): # Print (666)# f1 =

The fifth day, the feeling began to burn the brain. Recursive logic difficult, the number of modules, but the peerless martial arts are ten years to sharpen a sword out! Steady! 1 recursion.Defining-----Recursion is calling itself inside a

The JSON full name is the JavaScript object Notation (that is, the JavaScript objects tag), which is a subset of JavaScript.Front-end and back-end data interaction, in fact, JS and Python for data interactionInterface One: Json.dumps (obj) #

#!/usr/bin/python# coding:utf-8import osimport jsonimport socketimport psutilclass  host:    _hostname = socket.getfqdn (Socket.gethostname ())       @classmethod     def get_local_addr (CLS):         addr = socket.gethostbyname (Cls._hostname)      

1.3.7 matches any single character (2018-05-08)point number (. Cannot match a newline character \ n or a non-character, which means 　　 an empty string　　search for a real period (decimal point) While we are using a backslash to escape the

Python's class allows you to define many custom methods that make it very easy to generate specific classes. The following are the common custom methods of centralization:How can you print it well? Just define a good __str__() method and return a

The concept of threading has been put forward before the advent of multicore CPUs, and multithreading in the single-core era is intended to make the CPU as idle as possible, so that its computing power can always be exploited. But essentially, only

ObjectiveToday Xiao Yoyo please xiaoming and Xiaowang eat hot pot, after eating hotpot will have the following three kinds of scenes: Scene One: Small series (master) first Ate, xiaoming (guest) and Xiaowang (guest) has not eaten, this

ObjectiveA small partner in the script to launch the browser when the original downloaded plugin is missing, unable to use Firebug on the open page to continue to locate page elements, debugging

This article mainly introduces the operation of Radio box and check boxI. Recognize the radio box and check box1. Recognize what the Radio box and check box look like first2. The small partners to see clearly, the above box is round, the check box

(the following codeLinuxTest Success)linux-node0.oldboyedu.com 192.168.1.30 installation salt-master,salt-minionlinux-node1.oldboyedu.com 192.168.1.31 installation salt-minionThe main use here Saltstack of the Grains, is that Saltstack Minion static

It is no problem to run your own Python program in your own Python environment. But if you want to publish it to someone else, it needs to have a python environment. Otherwise, we will need to publish our Python program as an executable

Python tkinter for simple login Registration final effect Start interface ? Registered Landing ? SOURCE login.py# Encoding=utf-8 fromTkinterImport *

Wow! Installation is very annoying Ah, the last discovery is the cause of their own network. Meditation Summary!!!Python is 3.6CentOS 6 64-bit1. Install Python801704712. Install Pipwget

This article mainly introduces the use of implementation xlsxwriter to create Excel file and edit, has a certain reference value, now share to everyone, the need for friends can refer to Before the operation of Excel used other ways, for the

This article mainly introduces the use of IP proxy pool Python3 requests in the random generation of IP instances, has a certain reference value, now share to everyone, the need for friends can refer to Don't say anything, just go to the code! #

This article mainly introduces the Python get proxy IP instance sharing, has a certain reference value, now share to everyone, the need for friends can refer to Usually when we need to crawl some of the data we need, always some sites prohibit

This article mainly introduces the Python code indentation and test module Examples of detailed, with a certain reference value, now share to everyone, the need for friends can refer to Objective Python code indentation and test module is an