object oriented programming python book

Short, object-oriented programming is to wrap a class class outside of a function program, and then point the class to an objectAnd the functions in class are called methods here.As an example:Use functional programming to write a script that sends a message in one click:def e_mail (email,message): print (' mail sen

This article mainly introduces the class and object learning tutorials in Python object-oriented programming. object-oriented is the basic feature of

Everything in Python is an object. class provides a mechanism for creating new types of objects. In this tutorial, we don't talk about class and object-oriented basics, but focus on a better understanding of Python object-

, but is different from a constructor because Python is not new. After the instance is created, the method is invoked before the instantiation call returns the instance. 2, object-oriented programming Common terminology abstract/implementation: Modeling reality Encapsulation/Interface synthesis: union, aggregation inhe

through their common attributes and actions, without regard to their specific classes.The ice, the water vapor, all inherit from the waters, and they all have a method of the same name to become the cloud, but the ice. to Cloud (), and vapor. Cloud () is a very different process, although the methods are all the same9.7 Introspection/ReflectionIntrospection, also known as reflection, shows how an object obtains its own information at run time. If you

Advanced Python Applications (iii) object-oriented programming step-by-stepKey points to learn in this chapter: Object-oriented Advanced Syntax section Static methods, class methods, property methods Spec

Object-Oriented Programming Summary-Python,-python All things are objects. The natural environment gives us endless imagination, and the idea of object-oriented

__init__ (self, name, gender, score): super (Student, self). __init__ (name, gender) = ScoreBe sure to super(Student, self).__init__(name, gender) initialize the parent class, otherwise the inherited from Person Student will not name 和 gender . The function super(Student, self) returns the parent class that is inherited by the current class, that is Person , then calls the __init__() method, notes that the self parameter is passed in super() , implicitly passes in, __init__() and

does not meet the requirements of the subclass, it can be overridden, which is called the override of the method, also known as the override of the method. instance variable: A variable defined in a method that acts only on the class of the current instance. inheritance: A derived class (derived class) that inherits the fields and methods of the base class. Inheritance also allows the object of a derived class to be treated as a base class

, ' y ')19>>> OBJ.Y19>>> hasattr (obj, ' power ') # have attribute Power(method)?True>>> getattr (obj, ' power ') # get Property PowerSyntaxerror:invalid character Inidentifier>>> getattr (obj, ' power ') () # get property Power value81>>> fn = getattr (obj, ' power ')>>> fn ()81Hasattr 's classic application scenarioApply the above Myobject () instance>>> def readpower (obj):... if hasattr (obj, ' power '):... return obj.power ().. else:... return None...>>> Readpower (Myobject)Traceback (most

):if notisinstance (age,int):Print('Age must is integer.') returnSelf .__age= AgedefSetsex (self,sex):ifSex! ='Mans' andSex! ='woman': Print('sex must is "man" or "woman".') returnSelf .__sex=SexdefShow (self):Print('Name:', self.__name) Print('Age :', self.__age) Print('Sex:', self.__sex)#define a derived class and call the base class methodclassTeacher (person):def __init__(self,name="', age=30,sex='Mans', id=215): Super (teacher,self).__init__(

='Dog'#Private Properties defCry (self): self.__test()#Calling Private Methods Print('Private Property%s'%self.__type) Print('Dog [%s] Wang Woo'%self.name)def __test(self):#Private MethodsSelf.name ='Test'#D =D () d.cry ()#Normal can callD.__type#error, because it is a private property, cannot be accessed outsideD.__test()#error, because it is a private method, cannot be accessed outsideStatic Methods and class methods: class

): self.__test () #调用私有方法 print (' Private property%s '%self.__ Type) print (' Dog [%s] Wang Barking '%self.name) def __test (self): #私有方法 self.name = ' Test ' # d = d () d.cry () # Normal can call d.__type# error, because it is a private property, outside cannot access the d.__test () #报错, because it is a private method, outsi

This article is a computer class of high-quality pre-sale recommendation >>>>Python 3 Object-oriented programmingEditorial recommendationsThis book is not an introductory book for Python and is intended for developers who have bas

' Marks: '%d ' '% SE Lf.markst = Teacher (' Mrs. ShriVidya ', Max, 30000) s = Student (' Swaroop ', ', ') Print # prints a blank linemembers = [T, s]for member in Members:membe R.tell () # Works for both Teachers and Students$ python inherit.py(Initialized SchoolMember: Mrs. Shrividya)(Initialized Teacher: Mrs. Shrividya)(Initialized SchoolMember: Swaroop)(Initialized Student: Swaroop)Name:"Mrs. Shrividya" Age:"40" Salary: "30000"Name:"Swaroop" Age:"

static data . They represent that the data is bound to the class object to which they belong and does not depend on any class instance. If you are a Java or C + + programmer, this type of data is equivalent to adding the static keyword before a variable declaration.Static members are typically used only to track values associated with a class. class Attri (): " Class attribute Test " if __name__ ' __main__ ' : Print (attri.arrtitest) D:\

): .... instantiation of a classBefore we introduce some of the methods and definitions of a class, how can you create an object of a class to instantiate? In fact, this is very simple, as follows:Format:variable = class name (parameter) Classclass_name (object): def__init__ (self,name): self.__name=namedef get__score (self):returnself__name defset__attrs (Self,name): self.__name=namedef__del_

, divided by 2 divided by 2 ...He is mainly used in sequential sequence , the principle is that every time the original sequence is binary , gradually narrowing the search range of an algorithm. Applies to recursion, in loops, until the result is found.#运用 the method of recursion and dichotomy, look for a value in the list data = [1, 3, 6, 7, 9, B, B, B, A,,, +, +, +, +, +, = Int (input ("ple ASE input your want to find number: ") def search (num,data): If Len (data) > 1: #排除列表分割, only on

operating system3, since the server can install the operating system, in my design, I have the operating system also as an object, describe the operating system object class has the operating system name, and a specific installation methodFinally, for those who are still more vacant students read this article, will it be a little inspiration? My example here just plays a role, the level is limited, but als