Python

First, starting from a usage scenarioDevelop a log system that outputs logs to the console and to log filesPython code Import logging # Create a Logger Logger = Logging.getlogger (' MyLogger ') Logger.setlevel (logging. DEBUG) #

Class Methodtest ():var1 = "Class var"  def__init__ (self, var2 = "Object var" ): self.var2 = var2   @staticmethod Defstaticfun ( ): print ' static method '   @classmethod Defclassfun (CLS): print ' class method ' The

Object-oriented programming--object oriented programming, short for OOP, is a programming idea. OOP takes objects as the basic unit of a program, and an object contains functions for data and manipulating data.Process-oriented programming treats a

In OOP programming, when we define a class, we can inherit from an existing class, and the new class is called a subclass (subclass), and the inherited class is called the base class, the parent class, or the superclass (base-Class, Super-Class).For

Cat T.jo {"Name": "Test", "type": "KKK", "PPP": {"parate": []}} or add array t2.jo:[{"name": "Test", "type": "KKK", "PPP": {"parate": [ 1,2]}},{"name": "PPP"}] 2. Parsing T.jo Import Jsonin [i]: s=json.loads (' {"name": "KKK", "type": "PPP"} ')

Good memory is better than bad writing, there are some commonly used numbers, string conversion of learning notes1. Convert a binary number to a string in the specified formatLet's take a look at a small piece of code>>> a = 0b0100>>> print a4>>>

I compared the run time of sort and a program I wrote O (n). Marvel finds the speed of sort almost as close as the program run Time of O (n) written directly in Pythonfirst on the codetest code for sortImport RandomImport SYSlen_test_arr = Int

People who use Python know that the range () function is handy, and when you use him today, you find a lot of details that you've seen but forgotten. Here's a record of range (), review the list's slide, and finally analyze a fun bubbling

Sometimes we have to go to other interfaces to fetch data, possibly because the network reason occasionally failed, in order to be able to automatically retry, wrote such an adorner.This is the version of python2.7x, python3.x can be rewritten with

First, the program code:Import arcpyarcpy. Checkoutextension ("spatial") Arcpy.gp.overwriteoutput=1arcpy.env.workspace = "F:\\modis_16\\1moasic" rasters = arcpy . Listrasters ("*", "TIF") mask= "F:\\vegetation

Since its release, Edwin has received a lot of attention and won many star. Some significant improvements have been made recently, and some of the documentation has been perfected.Project Address: Https://github.com/harryliu/edwin, welcome fork or

In fact, the self-feeling Python multithreading is similar to the multithreading mechanism of Java, but more flexible than Java multithreading. In the early Python multithreading implementation, the thread module was adopted. For example:Python code

Learn Python with the old and interesting iterations, and learn python Oh, this is a real cool x programmer. However, he is just a cow X, not a great god. What Are Great programmers like? He swept the floor, hiding in the city. First, let's clarify

Analysis of python automated test instances and python automated instances This article describes the python automated testing process and shares it with you for your reference. The Code is as follows: import unittest ###############################

It's a little simple, just like learning Python. This term is involved in the previous lecture about tuples. This section describes it in full. Let's take a look at an example: >>># Variable reference str >>> s = "abc" >>>> s 'abc' >># if you write

Python single-chain table simple implementation method, python Single-Chain implementation The example in this article describes the simple implementation of a Python single-chain table and shares it with you for your reference. The specific method

Isn't it easy to learn Python circles with old Qi ?, Qi xue python circle In python, a loop has a statement: for statement. Simple for loop example >>> hello = "world">>> for i in hello:... print i... world How does the above for loop work? Hello,

Real-time tagging of Project exercise notes and python notes This is the practice behind the basic python tutorial. It is written as follows. On the one hand, it is used to familiarize yourself with the python code method, and on the other hand it

Familiar with Python (3) and familiar with python String is a topic center. ID of a string In many cases, we need to perform operations on each character in the string (see the following content for details). To perform operations accurately, we

Python _ advanced featuresPython advanced features Author: lxy Slicing, iteration, list generation, generator Slice The less code Python, the simpler the better, We want to take a part of the element in a list. We can use the judgment + loop