object oriented programming python book

): Self.name=name Self.score=scoredefLanginfo (self):Print '%s:%s'%(Self.name,self.score)classC (Lang):PassclassPython (Lang):defLanginfo (self):Print "Hello%s!"%(self.name) lang1=c ('C + +','9.0') Lang2=python ('Python','8.5') Lang1.langinfo () Lang2.langinfo ()Operation Result:5. polymorphicThe subclass must be an instance of the parent class, and the parent class is not necessarily an instance of the chi

= Role ("Tom", ' Police ', ' Desert Eagle ', "a") #Role (P1, "Tom", ' Police ', ' D Esert Eagle ', max. T1 = Role ("Stanley", ' Terrorist ', ' Glock ', ' + ') #Role (T1, "Stanley", ' Terrorist ', ' B11 ', ") print (" T1 ' s Weapon was [%s] before "% t1.weapon) print (" = ". Center (+, ' = ')) t1.buy_weapon (' AK47 ') #转换为Role. Buy_weapon (T1, ' AK47 ') Print ("T1 ' s weapon is [%s] now"% t1.weapon) Result:t1 ' s weapon was [Glock] before======================================= =[stanley] is buyi

(User_info):#Step 2Is_value =TrueifLen (user_info['name']) ==0:Print('user name cannot be empty') Is_value=FalseifLen (user_info['pwd']) : Print('password cannot be less than 6 bits') Is_value=Falseif notRe.search (R'@.*?\.com$', user_info['Email']): Print('Bad mailbox Format') Is_value=Falsereturn { 'Is_value': Is_value,'User_info': User_info}defRegister (Check_info):#Step 3 ifcheck_info['Is_value']: with open ('json.db','W', encoding='Utf-8') as F:json.dump (check_inf

accessed by the class.With dynamic methods There are also static methods, so what if a static method is defined?To define a static method, there are two requirements:1, need to add an adorner "@staticmethod" on the dynamic method2, remove self, Because static methods belong to the class, and self belongs to the objectTo create a static method:@staticmethoddef foo (): print ' This is a static method 'Person:static (): person.static ()Output result:This is a static methodSummary: the difference b

GetAttr (Self,item) return self.__dict__[ Item] def __setitem__ (self, Key, value): # setattr (self,key,value) Self.__dict__[key]=value def _ _delitem__ (self, Key): # delattr (self,key) Self.__dict__.pop (key) def __len__ (self): return 10f=foo (' Egon ', ' Male ') print (f.name) #f [' Name ']print (f.age) #f [' Age ']print (f.sex) #f [' Sex ']print (f[' name ']) f[' Name ']= ' egon_nb ' Print (f.__dict__) del f[' name ']print (f.__dict__)Prin

can hold the objectBy encapsulating existing objects, they can be made into new objectsEach object belongs to a typeType, that is, classObject is an instance of a classAn important feature of the class is "what message can be sent to it"Once a class is defined, you can instantiate multiple objects as neededEach object can only accept a specific requestA request that can be sent to an

Python applications support process-oriented programming and object-oriented programming. In the "process-oriented" language, A program is built by a process or a function that can only

The next thing you learn about object-oriented programming is that the basics are not recorded and only some Python-specific or advanced features are recorded.Http://www.liaoxuefeng.com/wiki/0014316089557264a6b348958f449949df42a6d3a2e542c000/ 0014318645694388f1f10473d7f416e9291616be8367ab50001. Definition of classThe d

, and, of course, using Java in a similar way. Because Python supports higher-order functions, the Get/set method can be decorated with adorners as attributes.classStudent (object):def __init__(self, Name, score): Self.name=name self.__score=score @property#Decorate Get method defscore (self):returnSelf.__score@score. Setter#Decorative Set method, a byproduct of @property decoration defscore (self, sc

here: | | __add__ (self, other_color) | Return a new Color made fromAdding theRed, Green andBlue Components | ofThis Color toColor Other_color ' s components. If theSum is Greater than|255, theColor is Set to 255| | __eq__ (self, other_color) | Return TrueifThis Color ' s components isEqual toColor Other_color ' s components. | | __init__ (self, r, G, b) | A New Color withRed value R, Green value G, andBlue value B. All | Components is integersinch theRange0-255.| |

object oriented into introductionProcess-oriented programmingThe core is the process (pipeline thinking), the process is the steps to solve the problem, the process-oriented design is like a well-designed pipeline, consider when to deal with what things. The main applications are in places where little modification is

This article mainly introduces the detailed description of object-oriented programming in Python (I ), this article describes how to create a class, instantiate a class, class attribute, built-in attribute of a special method, static variable attribute, instance variable attribute, method attribute, static method, and

classes at the same time. Mixin Mixin design mode The function of class is extended mainly by multi-inheritance method Mixin concept MRO and Mixin Mixin mode Mixin MRO Mro We use multiple inheritance syntax to implement Minxin Use Mixin to implement multiple inheritance with great care First he must show a single function, not an item Responsibilities must be single, if multiple functions are written, then mu

ensure that only a single instance exists in the current memory, avoiding memory waste!!!When you create an object, you can no longer use it directly: obj = Foo (), and you should call a special method: obj = Foo.dl ().The essence is actually to define a static method, to determine whether there is already a singleton object, if there is a direct return of the Singleton

process-oriented programming (Baidu or Google):　　(1) Definition:(2) Compare the advantages and disadvantages of functional and process-oriented programming:Classes in Python:(1) definition (Baidu or Google):　　(2) Description: The classes in Python consist of properties and m

return value must is a string object. Read the explanation, where to say is the user-oriented, and where the programmer???? See the bold word No, see the slide line has not??? It's all about acting for everyone!!! If you want to be in your own position, well, it seems like such a thing, it is really obscene and vague expression.Do not say, first small try:#!/usr/bin/