Python

In this article let's look at the Python search and replace, some friends may have just come into contact with the Python programming language, this is not a special understanding of this aspect, but it is okay next this article will bring you to

Just started to learn multi-threading when a joke in the use of Python thread printing things found that their own thread data is not printed, looking for a long time did not find the problem, nor the nerve to ask, oneself suppress a long time only

Built-in function evalEval executes the code of the string representation and returns the result1I1 = eval ('12+22') Two number of values added2 Print(I1, type (i1)) 3n = 24I2 = eval ('n+3') Add the value and the value of the variable5 Print(I2,

Decorative DeviceAdorner is actually to add functionality to a program, but the program has been online or has been used, then can not be large-scale modification of the source code, this is not scientific and unrealistic, because it produced an

Let's start with an example:class Person (object):d EF __init__ (Self, name): Self.__name = Name@propertydef get_name (self): return self.__name@get_ Name.setterdef get_name (Self, new_name): Self.__name = New_nameperson = Person ("Adong")

It is mainly a function written using the generator:defMyxrange (start, stop = 0, step = 1): ifStop = = 0 andStep = = 1:#when only one formal parameter is enteredStop =Start Start=0 whileStart Stop:yieldStart Start+=1elifStep = = 1:#when entering

Tag:error   inpu   file    string table    error:    string   line    expression    traceback    input 接受合法的Python 表达式 raw_input 将所有的输入作为原始数据，将其放入字符串中 >>> name = input("what‘s your name ?") what‘s your name ? Yellow Traceback (most recent call last)

First, print out the changed output.Because there is no computer foundation, so there are a lot of mistakes, groping for a while.Error 1:Print ("How old is?"),Age = Raw_input ()Print ("What's your Name?"),Name = Raw_input ()Print ("How tall

Originalget native IP via UDP, the most elegant method ever seenThis method is the most elegant IP method to get the native server now. There is no dependency and no guessing of network device information on the machine.The UDP protocol is used to

1. Create a project directory "Cc:\python Project \test1".2. Open cmd to enter the project directory CD C:\python project \test13. Execute Django-admin startproject HellowordC:\python Projects \test1>django-admin Startproject Project4. Setting up

First, the combinationWhat is a combination?The type of a property of a class is the type of another custom class, or it can be said that an object has one property, and the value of that property is an object of another class.Reduces code

python versionPython's current version is divided into 2.7 and 3.5, and the two versions of the code are currently incompatible, looking at the Python version number:Python--versionBasic data TypesNumber TypeThe use of integral and floating-point

(1) Capitlize function (change the first letter of the string to uppercase)1 ' Doudizhu ' 2 v = h.capitalize ()3print(v)Output is: Doudizhu(2) lower function (lowercase all letters in a string)1 ' Doudizhu ' 2 v = h.lower ()3print(v)Output is:

Create a frame name. pyPlay airplane gamesLoading musicPlay MusicI was born on a plane.Inter=0While true:If the user misses the close:Exit programBleakInter+=1if Inter = = 50:Iner = 0The birth of a small planeSmall aircraft Move one positionScreen

Using Chrome or Firefox to crawl Web pages, the process of running the program needs to open the browser.Method One: Currently, the latest Chrome supports no interface mode.Method Two: Install no interface browser PHANTOMJS, at this time the crawl

1. The Python module file can be compiled into bytecode form:Name: model.py123 def funt (): Import model print (model.x) "zhangnan" Print (x)Top-level file, main file test.pyImport Sysimport Model for inch sys.modules: Print ( x)

"View Source document" Python interface document one, introductionLife is too short to use the most effective way:This article addresses the crowd: Python development, Python enthusiastsPurpose of this article: View the interface of PythonQQ

01 Yesterday's Content reviewCode block: One file, one function, one module, one class, and each line in interactive mode is a block of codeis = = Id:id () is the query memory address, = = Compare the values on both sides, is to compare the memory

Plastic Magic1 #string type to int type2 #num= "123"3 #n=int (num)4 #print (n)5 #Print ( type (n)) print (type ()) can show what data type this thing is6 7 #num= "a" #base = how much, according to the number of binary conversion to 10 binary8 #v=int

When defining a function, we determine the parameter name and position of the function, the interface definition of the function is complete, and when using the parameter, we can use the default parameter, the variable parameter and the keyword