polymorphism in Python - True or False Questions with Answers

Test your understanding of Object-Oriented Programming (OOP) in Python with these carefully crafted True or False questions on polymorphism. Great for beginners and intermediate learners to reinforce OOP concepts.

🔍 True or False

🟢 Beginner

1. In Python, polymorphism is only possible through inheritance.
Answer

❌ False – Polymorphism in Python can be achieved through both inheritance (method overriding) and duck typing (shared interfaces), not just inheritance.

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2. Polymorphism allows objects of different classes to be treated as objects of a common superclass.
Answer

✅ True – Polymorphism enables treating different class instances through a common interface, allowing for flexible and reusable code.

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3. The built-in len() function in Python is an example of polymorphism.
Answer

✅ True – The len() function works with different types (strings, lists, tuples, etc.) because they all implement the __len__() method, demonstrating polymorphism.

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4. The + operator in Python behaves differently with strings and numbers, demonstrating polymorphism.
Answer

✅ True – The + operator performs concatenation with strings and addition with numbers, showing operator overloading which is a form of polymorphism.

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🟡 Intermediate

1. Method overloading is a common way to achieve polymorphism in Python.
Answer

❌ False – Python doesn't support method overloading (multiple methods with same name but different parameters) in the traditional sense. Polymorphism is typically achieved through method overriding or duck typing.

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2. Duck typing is a form of polymorphism where the suitability of an object is determined by the presence of certain methods and properties.
Answer

✅ True – Duck typing ("if it walks like a duck and quacks like a duck...") is a Pythonic approach to polymorphism that focuses on an object's behavior rather than its type.

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🔴 Advanced

1. Python's abstract base classes (ABCs) prevent polymorphism from occurring.
Answer

❌ False – ABCs actually facilitate polymorphism by enforcing a common interface that subclasses must implement, while still allowing different implementations.

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