Python for OOP - The A to Z OOP Python Programming Course - isinstance() and issubclass()

The video tutorial covers two Python methods: is_instance and is_subclass, focusing on their roles in object-oriented programming and inheritance. It explains how to use these methods to determine if an object is an instance of a class or if a class is a subclass of another. Practical examples are provided to illustrate these concepts, emphasizing the importance of inheritance in class relationships.

What is the primary difference between a method and a function in Python?

• A method is only used for mathematical operations.

• A method can only be used with strings, while a function can be used with any data type.

• A method is defined inside a class, while a function is defined outside.

• A method is faster than a function.

What does the isInstance method return when an object is an instance of a specified class?

• A boolean value

• A string

• A list

• An integer

If a class B inherits from class A, what can be said about the objects of class B?

• They are only objects of class B.

• They are objects of class A and B.

• They cannot be objects of class A.

• They are objects of a new class C.

What will the isInstance method return if you check an object of the Phone class against the Smartphone class?

• True, because Phone is a subclass of Smartphone.

• False, because Phone does not inherit from Smartphone.

• True, because all classes are related.

• False, because Smartphone is a subclass of Phone.

What does the isSubclass method help you determine?

• If a class is a parent class of another class.

• If a class is faster than another class.

• If a class is a subclass of another class.

• If a class has more methods than another class.

When using isSubclass, what will it return if you check if Phone is a subclass of Flagship?

• False, because Flagship is a subclass of Phone.

• True, because all classes are subclasses of each other.

• False, because Phone is not a subclass of Flagship.

• True, because Phone is a subclass of Flagship.

Which of the following statements is true about the isSubclass method?

• It checks if an object is an instance of a class.

• It checks if a method belongs to a class.

• It checks if a function is defined inside a class.

• It checks if a class is a subclass of another class.