17 Overriding and the super method Telugu Python

In [24]:

"ram" +"venkat"

Out[24]:

'ramvenkat'

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In [25]:

class Emp():
    def setworkhours(self):
        self.workhours=30
    def disworkhours(self):
        print("work hours",self.workhours)
e=Emp()
e.disworkhours()
    

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-25-61cc7924f16b> in <module>()
      5         print("work hours",self.workhours)
      6 e=Emp()
----> 7 e.disworkhours()
      8 

<ipython-input-25-61cc7924f16b> in disworkhours(self)
      3         self.workhours=30
      4     def disworkhours(self):
----> 5         print("work hours",self.workhours)
      6 e=Emp()
      7 e.disworkhours()

AttributeError: 'Emp' object has no attribute 'workhours'

In [26]:

class Emp():
    def setworkhours(self):
        self.workhours=30
    def disworkhours(self):
        print("work hours",self.workhours)
e=Emp()
e.setworkhours()
e.disworkhours()
    

work hours 30

In [12]:

# over riding
class Emp():
    def setworkhours(self):
        self.workhours=30
    def disworkhours(self):
        print("work hours",self.workhours)
class trai(Emp):    
    def setworkhours(self):
        self.workhours=40
e=Emp()
e.setworkhours()
e.disworkhours()
    

work hours 30

In [28]:

# over riding
class Emp():
    def setworkhours(self):
        self.workhours=30
    def disworkhours(self):
        print("work hours",self.workhours)
class trai(Emp):    
    def setworkhours(self):
        self.workhours=40
e=Emp()
e.setworkhours()
print("emp work hours")
e.disworkhours()
t=trai()
t.setworkhours()
print("Trainee work hours")
t.disworkhours()

emp work hours
work hours 30
Trainee work hours
work hours 40

In [20]:

# over riding
class Emp():
    def setworkhours(self):
        self.workhours=30
    def disworkhours(self):
        print("work hours",self.workhours)
class trai(Emp):    
    def setworkhours(self):
        self.workhours=40
    def reset(self):
        super().setworkhours()
e=Emp()
e.setworkhours()
print("emp work hours")
e.disworkhours()
t=trai()
t.setworkhours()
print("Trainee work hours")
t.disworkhours()

emp work hours
work hours 30
Trainee work hours
work hours 40

In [29]:

# over riding
class Emp():
    def setworkhours(self):
        self.workhours=30
    def disworkhours(self):
        print("work hours",self.workhours)
class trai(Emp):    
    def setworkhours(self):
        self.workhours=40
    def reset(self):
        super().setworkhours()
e=Emp()
e.setworkhours()
print("emp work hours")
e.disworkhours()
t=trai()
t.setworkhours()
print("Trainee work hours")
t.disworkhours()
t.reset()
print("Trainee work hours")
t.disworkhours()

emp work hours
work hours 30
Trainee work hours
work hours 40
Trainee work hours
work hours 30