Classes Are Customized by Inheritance : Inheritance « Class « Python Tutorial

1. Python Tutorial
2. Class
3. Inheritance

class FirstClass:          
    def setdata(self, value): 
        self.data = value     
    def display(self): 
        print self.data       

class SecondClass(FirstClass): 
    def display(self):         
        print 'Current value = "%s"' % self.data 

z = SecondClass(  ) 
z.setdata(42)                
z.display(  )