examples of inheritance in python

= ' tianxin ' self._age = @property def ): return self._age @age. Setter def Age: if >: raise ValueError self._ Age = Age Examples of Use: >>> actress = actress () >>> actress.age20>>> actress.age = 18>>> Actress.age = 45ValueError The difference between using property in Python2 and Python3The above Property example is valid in a Python3 environment. In Python2, when a property is used, the class definition needs to inherit ob

In Python, the operator module operator examples are summarized. The operator module is a built-in operator function interface in python, which defines some arithmetic and relatively built-in operation functions. The operator module is implemented in c, so the execution speed is faster than that of python code. Logical

This article mainly introduces some examples of the Django framework code to simplify Python. In fact, this article only extracts some of the most basic functions of Django to simplify the complexity of beginners. Next, for more information, see Django's popularity and popularity. some developers still think that she is an outdated web development framework and is only suitable for content-rich web programs

Argparse is a python built-in module for quick creation of command lines. There is a third-party module Click can also implement this function, both have advantages and disadvantages, look at the individual needs.Official websiteHttps://docs.python.org/3.5/library/argparse.htmlImport argparse__verison__ = ' 1.1.1 ' parser = argparse.Argumentparser (description= ' hahahaaaa ') parser.add_argument ('-V ', '--version ', action= ' version ', version= '% (

parameter sequence represents an ordered type. Here's a note: sequence is not a specific type in Python, but a series of types. list, tuple, string all belong to sequence.ImportRandomPrint(Random.choice ("Learn python"))Print(Random.choice (["Jgood"," is","a","Handsome"," Boy"]))Print(Random.choice ("Tuple","List","Dict")))#XI#Jgood#Dict5:random.randrangeRandom.randrange ([start], stop[, step]), from withi

= Fouttry:child.expect (' (? i) password ') child.sendline (passwd) child.expect (' # ') child.sendline (' tar-zcf /data/logs/nginx.tar.gz ' +target_file) child.expect (' # ') printchild.beforechild.sendline (' exit ') ) Fout.close () excepteof:print "expecteof" excepttimeout:print "ExpectTIMEOUT" Child=pexpect.spawn ('/usr/bin/scp ', [user+ ' @ ' +ip+ ':/data/logs/nginx.tar.gz ', ' Home ']) fout=file (' Mylog.txt ' A ') child.logfile=fouttry:child.expect (' (? i) password ') child.sendline (pas

The examples in this article describe Python multiprogramming (multiprocessing) usage. Share to everyone for your reference. The specific analysis is as follows: Because of the limitations of Python design (I'm talking about our usual cpython). Up to 1 CPU cores can be used. Python provides a very useful multiprocess

In Python, the Pickle class can typically be used to serialize Python objects, while Cpickle provides a faster and simpler interface, as the python document says: "Cpickle-A faster pickle". Cpickle can serialize any type of Python object, such as List,dict, even objects of a class. The so-called serialization, my supe

This article describes the installation of Gearman and Python API usage examples, for website construction and server maintenance is very useful! First, overview: Gearman is a very good task distribution framework that can be used in distributed computing. The installation of the specific Gearmand service and the installation of the Gearman Python module as well

Golang and python thread details and simple examples, golangpython thread Golang and python thread details and simple examples In GO, 15 threads are enabled, and each thread increases global variable traversal by 100000 times. Therefore, the prediction result is 15*100000 = 1500000. var sum intvar cccc intvar m *sync.M

Python strip () function and split () function details and examples, pythonstrip Details and examples of python strip () and split () Functions The strip and split functions are unclear for a long time. In fact, strip means deletion, while split means segmentation. Therefore, the two functions are completely different.

Python dict dictionary and some examples of value assignment reference (detailed description), pythondict Recently, I am working on a very large database that needs to be searched by numerical value. So I thought of the dictionary in python, and I have never used dict. List and tuple are the most commonly used) I have read the following method to create a diction

This article mainly introduces the self principle in python, analyzes in detail the self principle and related usage skills, and has some reference value, for more information about the self principle in python, see the examples in this article. Share it with you for your reference. The specific analysis is as follows: Class methods have only one special differe

This article mainly introduces the deadlocks, reentrant locks, and mutex locks in Python. although Python GIL problems in thread programming are commonplace, you can refer I. deadlock To put it simply, a deadlock occurs when a resource is called multiple times, and a deadlock occurs when the resource is not released by multiple callers. here we use examples to i

Python uses the Scipy package's SIFT method for image recognition examples, ScipyThe scipy package contains a toolbox dedicated to common problems in scientific computing. Different submodules correspond to different applications. Such as interpolation, integration, optimization, image processing, and special functions.Scipy can be compared with other standard scientific computing libraries, such as GSL (gn

The examples in this article describe Python coprocessor usage. Share to everyone for your reference. Specifically as follows: The function is written as a task to handle a series of inputs sent to him, called a coprocessor. ? 1 2 3 4 5 6 7 8 9 10 11 12 13 14-15 16 def print_matchs (matchtext): print "Looking for", matchtext while true:line = (yield) #用 The yield statement and creates a c

thought of it, Py is a good evil word#abandon python to py.#the numbers contained in Python are: integers, floating-point numbers, complex numbers, decimal numbers with fixed precision, rational numbers with numerator and denominator#supported operations are: + for addition, * for multiplication, * * for exponentiationPrint(123+222)#two numbers added directlyPrint(1.5 * 4)Print("You know:"+ str (2**10))#No

The examples in this article describe the techniques used in the use of properties and methods in Python programming. Share to everyone for your reference. The specific analysis is as follows: One, property In Python, attributes are divided into public and private properties, and public properties can be invoked outside the class, and private properties cannot