Python Inheritance and Composition interfaces

#解决代码重用的问题, reducing Code Redundancy # Inheritance is a relationship of what ' is 'classpeople:def __init__ (self, Name, age): # print ('people.__init__') Self.name=name Self.age=Age def walk (self): print ('%s is walking'%self.name)classTeacher (people): PassclassStudent (people): pass# t=teacher ('Egon', -) # Print (t.name,t.age) # print (t.__dict__) # T.walk () # s=student ('Alex', -) # Print (s.name,s.age) # S.walk () #====================classpeople:def __init__ (self, Name, age,sex): Self.name=name Self.age=Age Self.sex=Sex def Walk (self): print ('%s is walking'%self.name) def foo (self): print ('From father%s'%self.name)classTeacher (People): School='I love you.'#__init__ (T,'Egon', -,'male',Ten, the) def __init__ (self, Name, age,sex,level,salary): people.__init__ (Self,name,age,sex) #People. __init__ (T,'Egon', -,'male') #t. Name='Egon'#t. Age= -#t. Sex='male'Self.level=Level Self.salary=Salary def teach (self): print ('%s is teaching'%self.name) def foo (self): People.foo (self) print ('From teacher')classStudent (People): Def __init__ (self, Name, Age,sex,group): people.__init__ (self, name, age, sex) self . Group=Group def Study (self): print ('%s is studying'%self.name) T=teacher ('Egon', -,'male',Ten, the) #__init__ (T,'Egon', -,'male',Ten, the) T.foo () # #classteacher:# School='I love you.'# def __init__ (self, Name, age): # Self.name=name# self.age=age# def teach (self): # print ('%s is teaching'%self.name) # def walk (self): # print ('%s is walking'%self.name) # # #classstudent:# def __init__ (self, Name, age): # Self.name=name# self.age=age## def study (self): # print ('%s is studying'%self.name) # def walk (self): # print ('%s is walking'%self.name)

Inheritance

#继承是用来创建新的类的一种方式, the advantage is that you can reduce the number of duplicate code # Inheritance is the relationship between classes and classes, and what is a relationship # combination: What is a relationship and also to reduce duplication of codeclasspeople:def __init__ (self, name, age, year, Mon, day): Self.name=name Self.age=Age Self.birth=Date (year, Mon, day) def Walk (self): print ('%s is walking'%self.name)classdate:def __init__ (self,year,mon,day): Self.year=Year Self.mon=Mon self.day=Day def Tell_birth (self): print ('born in <%s> year <%s> month <%s> Day'%(self.year,self.mon,self.day))classTeacher (People): Def __init__ (self, name, age, year, Mon, day,level,salary): people.__init__ (Self,name,age, Year,mon,day) Self.level=Level Self.salary=Salary def teach (self): print ('%s is teaching'%self.name)classStudent (People): Def __init__ (self, name, age, year, Mon, Day,group): people.__init__ (Self,name,age,year,mo N,day) Self.group=Group def Study (self): print ('%s is studying'%self.name) # t=teacher ('Egon', -,1990,2, -) # Print (t.name,t.age) # print (T.birth) # T.birth.tell_birth () # Print (t.birth.year) # print (T.birth.mon) # Print ( T.birth.day)classcourse:def __init__ (self,name,price,period): Self.name=name Self.price=Price Self.period=period def tell_info (self): print ('Course name <%s> price <%s> period <%s>'%(Self.name,self.price,self.period)) #=====================================# classdate:# def __init__ (self,year,mon,day): # self.year=year# Self.mon=mon# Self.day=day## def Tell_birth (self): # print ('born in <%s> year <%s> month <%s> Day'%(Self.year,self.mon,self.day)) # #classteacher:# def __init__ (Self,name,age,birth): # self.name=name# self.age=age# Self.birth=birth## def teach (self): # print ('%s is teaching'%self.name) # # T_birth=date (1990,2, -) # t=teacher ('Egon', -, T_birth)

CombinationInterface

Python Inheritance and Composition interfaces