Inheritance

Level 49 of 50 · Objects & beyond

Level 49 of 50

Inheritance

children get the parent's code. Watch the reel, then work through it below: run the code, take the quiz, keep the cheat sheet.

📒 Open the cheat sheet

SanaEveryone says I have my father's nose!

TeacherClasses do that too! A child class gets the parent's code. Inheritance!

ride.py

class Ride:
    def fare(self):
        return 100
class Rickshaw(Ride):
    pass
r = Rickshaw()
print(r.fare())

TeacherRickshaw is empty, but it still has a fare!

SanaEmpty? So where did fare come from?

TeacherFrom the parent! (Ride) means: inherit everything Ride has.

ride.py

class Ride:
    def fare(self):
        return 100
class Careem(Ride):
    def fare(self):
        return 300
print(Careem().fare())

TeacherA child can also override. Careem writes its own fare!

⏸ Pause & predict: what prints?

class Phone:
    def ring(self):
        return "tring"
class Smart(Phone):
    def ring(self):
        return "beep"
print(Phone().ring())

Next: Generators & yield →← Methods

Where this leads

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