@@ -60,6 +60,31 @@ def set_variable(self, k, v):
6060 print ('Key-value argument makes the class model easily scalable in python.' )
6161 self .variables [k ] = v
6262
63+ class Phone :
64+ def __init__ (self ):
65+ print ('parent class' )
66+ 67+ def buttons (self ):
68+ print ('Has buttons to dial a number.' )
69+ 70+ def screen (self ):
71+ print ('Phone has a black and white display!' )
72+ 73+ class Mobile_phone (Phone ):
74+ def __init__ (self ):
75+ print ('Child class of Phone' )
76+ 77+ def internet_connection (self ):
78+ print ('Can connect to internet using WiFi!' )
79+ 80+ def buttons (self ):
81+ print ('Buttons on touch screen! -> Overriding buttons from Parent class Phones!' )
82+ 83+ def screen (self ):
84+ super ().screen () # method to access parent class methods
85+ print ('Display is colored as a whole.' )
86+ 87+ 6388def main ():
6489 # instantiate: make object of the class
6590 f = Fibonacci (0 ,1 )
@@ -84,4 +109,17 @@ def main():
84109 marty .set_variable ('intelligence' , 'VeryHighIntell' )
85110 print ('Getting new value of \' intelligence\' :' , marty .get_variable ('intelligence' ))
86111
112+ print ()
113+ print ('Explaining Inheritance in Python OOP:' )
114+ telepone = Phone ()
115+ print ('Methods of obj telephone:' )
116+ telepone .buttons ()
117+ telepone .screen ()
118+ samsung = Mobile_phone ()
119+ print ('Methods of derived class:' )
120+ samsung .internet_connection ()
121+ samsung .buttons ()
122+ samsung .screen ()
123+ 124+ 87125if __name__ == '__main__' : main ()
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