Can you explain the Liskov Substitution Principle in Python?
Sure! The Liskov Substitution Principle states that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.
Can you give me an example of this principle in action?
Absolutely! For instance, if you have a class Bird
and a subclass Penguin
, you should be able to use Penguin
wherever Bird
is expected, without causing errors.
What if the subclass doesn't behave like the superclass?
That's a violation of the principle. If Penguin
cannot fly, it shouldn't inherit from Bird
if Bird
is expected to have a fly()
method.
How can I ensure my classes follow this principle?
You can ensure this by designing your classes carefully, making sure that subclasses fulfill the expectations set by their superclasses.
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