python polymorphism

I often talk about duck and Polymorphism in python, and I often talk about python polymorphism. 1. What is polymorphism? 2. polymorphism in python Iii. Dynamic Language and duck type

Python object-oriented 2: inheritance, polymorphism, python Polymorphism The second feature of object-oriented is inheritance. The methods of multiple classes can be extracted to the parent class, And the subclass only needs to inherit the parent class; The basic syntax is the new class name of the class (parent class

, that is, Python itself is to support polymorphism, so what is the advantage of doing so?(1) Increased flexibility of the programStatus quo, regardless of the ever-changing object, the user is the same form to invoke, such as func (animal)(2) Increased scalability of the programBy inheriting the animal class, a new class is created, and the user does not have to change their own code or use Func (animal) t

animals there must be a talk method # So we can not consider the specific type of the three of them, and directly using C.drink () d.drink () P.drink()# Further, we can define a unified interface to use def func (obj): obj.talk ()two why to use polymorphism (the benefit of polymorphism)In fact, we can see from the above polymorphism example, we have not ad

polymorphism and dynamic polymorphism.Static polymorphism: If any type can be operated with operator +Dynamic polymorphism is as follows:Peo=people () Dog=dog () Pig=pig () #peo, dog, pig are animals, as long as the animal must have talk method # so we can not consider the specific type of the three, and directly use Peo.talk () Dog.talk () Pig.talk () #更进一步, we

polymorphism: sending the same message to different objects (!!!) Obj.func (): Is the method func that called obj, also known as a message Func sent to obj, and different objects have different behavior (that is, methods) when they are received. In other words, each object can respond to a common message in its own way. The so-called message, is called the function, the different behavior refers to the different implementation, namely executes the di

Referenced by: http://www.cnblogs.com/linhaifeng/articles/7340687.htmlPolymorphism in Python refers to a class of things that have many forms. For example, animals have many forms, people, dogs, cats, and so on.ImportABCclassAnimal (METACLASS=ABC. Abcmeta):#The same kind of things: animals@abc. AbstractmethoddefTalk (self):PassclassPeople (Animal):#one of the forms of animals: Man defTalk (self):Print('Say hello')classDog (Animal):#Animal Form Two:

First, review:1, the process: The core is the process, the process is the steps to solve the problem, that is, what to do first, what to do, based on process-oriented design procedures, like in the design of a pipeline, is a mechanical thinking method.Pros: Complex questions to simplifyCons: Poor scalability (holding a body)Application scenario: Linux kernel, httpd,git2, Object-oriented programming: The core is the object, to understand the object should regard themselves as God, in the eyes of

Python Object-Oriented Programming inheritance and polymorphism explanation, python Object-Oriented Programming This article describes the inheritance and Polymorphism of Python object-oriented programming. We will share this with you for your reference. The details are as f

the same, execution of the result is not the same as func (peo1) func ( PIG1) func (D1)(2).Why use polymorphism (the benefit of polymorphism)In fact, we can see from the above polymorphism example, we do not add the above new knowledge, that is, Python itself is to support polymor