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0

1

When I run this, I get the desired string corresponding to the species object that is created. My goal here is to be able to create a method called speak in the Animal class that achieves the same thing. But I don't have a good understanding on how to do that.

class Animal(object):

 def __init__(self):
 pass

 def speak():
 pass

class Mammal(Animal):

 def __init__(self):
 Animal.__init__(self)

class Cat(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "meeeow"

class Dog(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "wooof"

class Primate(Mammal):

 def __init__(self):
 Mammal.__init__(self)

class Hacker(Primate):

 def __init__(self):
 Primate.__init__(self)

 def __str__(self):
 return "Hello world!"

garfield = Cat()
print(garfield)

spike = Dog()
print(spike)

john = Hacker()
print(john)

python oop inheritance

share|improve this question

asked Mar 8 at 3:58

BrentBrent

136

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What is the problem with creating a method with another name but same code?
  
  – Michael Butscher
  Mar 8 at 4:05
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The name of the method could be anything, I just need to be able to call cat_name.speak() and and it return the string associated with that subclass.
  
  – Brent
  Mar 8 at 4:15
  

  
  
  
  

add a comment | 

0

1

When I run this, I get the desired string corresponding to the species object that is created. My goal here is to be able to create a method called speak in the Animal class that achieves the same thing. But I don't have a good understanding on how to do that.

class Animal(object):

 def __init__(self):
 pass

 def speak():
 pass

class Mammal(Animal):

 def __init__(self):
 Animal.__init__(self)

class Cat(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "meeeow"

class Dog(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "wooof"

class Primate(Mammal):

 def __init__(self):
 Mammal.__init__(self)

class Hacker(Primate):

 def __init__(self):
 Primate.__init__(self)

 def __str__(self):
 return "Hello world!"

garfield = Cat()
print(garfield)

spike = Dog()
print(spike)

john = Hacker()
print(john)

python oop inheritance

share|improve this question

asked Mar 8 at 3:58

BrentBrent

136

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What is the problem with creating a method with another name but same code?
  
  – Michael Butscher
  Mar 8 at 4:05
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  The name of the method could be anything, I just need to be able to call cat_name.speak() and and it return the string associated with that subclass.
  
  – Brent
  Mar 8 at 4:15
  

  
  
  
  

add a comment | 

When I run this, I get the desired string corresponding to the species object that is created. My goal here is to be able to create a method called speak in the Animal class that achieves the same thing. But I don't have a good understanding on how to do that.

class Animal(object):

 def __init__(self):
 pass

 def speak():
 pass

class Mammal(Animal):

 def __init__(self):
 Animal.__init__(self)

class Cat(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "meeeow"

class Dog(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "wooof"

class Primate(Mammal):

 def __init__(self):
 Mammal.__init__(self)

class Hacker(Primate):

 def __init__(self):
 Primate.__init__(self)

 def __str__(self):
 return "Hello world!"

garfield = Cat()
print(garfield)

spike = Dog()
print(spike)

john = Hacker()
print(john)

python oop inheritance

share|improve this question

asked Mar 8 at 3:58

BrentBrent

136

class Animal(object):

 def __init__(self):
 pass

 def speak():
 pass

class Mammal(Animal):

 def __init__(self):
 Animal.__init__(self)

class Cat(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "meeeow"

class Dog(Mammal):

 def __init__(self):
 Mammal.__init__(self)

 def __str__(self):
 return "wooof"

class Primate(Mammal):

 def __init__(self):
 Mammal.__init__(self)

class Hacker(Primate):

 def __init__(self):
 Primate.__init__(self)

 def __str__(self):
 return "Hello world!"

garfield = Cat()
print(garfield)

spike = Dog()
print(spike)

john = Hacker()
print(john)

share|improve this question

asked Mar 8 at 3:58

BrentBrent

136

share|improve this question

asked Mar 8 at 3:58

BrentBrent

136

asked Mar 8 at 3:58

BrentBrent

136

asked Mar 8 at 3:58

BrentBrent

136

2 Answers
2

active

oldest

votes

1

Yours inherited classes can access any method defined in the parent class. So to achieve this, just define a new method called speak in Animal class and print as you did in your examples:

class Animal(object):

 def __init__(self):
 print(self)
 pass

 def speak(self):
 print(self)

Then just create the instance and call the function:

garfield = Cat()
garfield.speak()

Output

meeeow

share|improve this answer

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Okay, I see now. This makes a lot more sense. Thank you!
  
  – Brent
  Mar 8 at 4:20
  

  
  
  
  

add a comment | 

1

Modify your Animal class like below. When you call the super method from your subclass, you're passing the instance of the class you created to the parent's init function. So the instance of class is passed to the Mammal init function, which calls super and passes the instance to the Animal init function.

class Animal(object):

 def __init__(self):
 self.speak()

 def speak(self):
 print(self)

share|improve this answer

edited Mar 8 at 4:41

answered Mar 8 at 4:06

ap288ap288

365

add a comment | 

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1

Yours inherited classes can access any method defined in the parent class. So to achieve this, just define a new method called speak in Animal class and print as you did in your examples:

class Animal(object):

 def __init__(self):
 print(self)
 pass

 def speak(self):
 print(self)

Then just create the instance and call the function:

garfield = Cat()
garfield.speak()

Output

meeeow

share|improve this answer

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Okay, I see now. This makes a lot more sense. Thank you!
  
  – Brent
  Mar 8 at 4:20
  

  
  
  
  

add a comment | 

1

Yours inherited classes can access any method defined in the parent class. So to achieve this, just define a new method called speak in Animal class and print as you did in your examples:

class Animal(object):

 def __init__(self):
 print(self)
 pass

 def speak(self):
 print(self)

Then just create the instance and call the function:

garfield = Cat()
garfield.speak()

Output

meeeow

share|improve this answer

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Okay, I see now. This makes a lot more sense. Thank you!
  
  – Brent
  Mar 8 at 4:20
  

  
  
  
  

add a comment | 

Yours inherited classes can access any method defined in the parent class. So to achieve this, just define a new method called speak in Animal class and print as you did in your examples:

class Animal(object):

 def __init__(self):
 print(self)
 pass

 def speak(self):
 print(self)

Then just create the instance and call the function:

garfield = Cat()
garfield.speak()

Output

meeeow

share|improve this answer

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

class Animal(object):

 def __init__(self):
 print(self)
 pass

 def speak(self):
 print(self)

garfield = Cat()
garfield.speak()

meeeow

share|improve this answer

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

answered Mar 8 at 4:09

Hemerson TaconHemerson Tacon

1,4521519

1

Modify your Animal class like below. When you call the super method from your subclass, you're passing the instance of the class you created to the parent's init function. So the instance of class is passed to the Mammal init function, which calls super and passes the instance to the Animal init function.

class Animal(object):

 def __init__(self):
 self.speak()

 def speak(self):
 print(self)

share|improve this answer

edited Mar 8 at 4:41

answered Mar 8 at 4:06

ap288ap288

365

add a comment | 

1

Modify your Animal class like below. When you call the super method from your subclass, you're passing the instance of the class you created to the parent's init function. So the instance of class is passed to the Mammal init function, which calls super and passes the instance to the Animal init function.

class Animal(object):

 def __init__(self):
 self.speak()

 def speak(self):
 print(self)

share|improve this answer

edited Mar 8 at 4:41

answered Mar 8 at 4:06

ap288ap288

365

add a comment | 

Modify your Animal class like below. When you call the super method from your subclass, you're passing the instance of the class you created to the parent's init function. So the instance of class is passed to the Mammal init function, which calls super and passes the instance to the Animal init function.

class Animal(object):

 def __init__(self):
 self.speak()

 def speak(self):
 print(self)

share|improve this answer

edited Mar 8 at 4:41

answered Mar 8 at 4:06

ap288ap288

365

class Animal(object):

 def __init__(self):
 self.speak()

 def speak(self):
 print(self)

share|improve this answer

edited Mar 8 at 4:41

answered Mar 8 at 4:06

ap288ap288

365

answered Mar 8 at 4:06

ap288ap288

365

answered Mar 8 at 4:06

ap288ap288

365