Python OOP Design MCQ Questions with Answers (Latest 2026)

Q1. Which option best describes a class in Python?

A. A dict subclass. B. A function only. C. A pure module. D. Blueprint for creating objects with state and behavior.

Select an answer to check.

Answer: Blueprint for creating objects with state and behavior.

Here, Blueprint for creating objects with state and behavior. is the right choice. Defined with class keyword. It aligns directly with what the question asks about which option best describes a class in python. A quick elimination of partially true options helps confirm it.

Q2. What is the primary purpose of a class?

A. A function only. B. Blueprint for creating objects with state and behavior. C. A pure module. D. A dict subclass.

Select an answer to check.

Answer: Blueprint for creating objects with state and behavior.

In this case, Blueprint for creating objects with state and behavior. is correct. Defined with class keyword. It aligns directly with what the question asks about what is the primary purpose of a class. A quick elimination of partially true options helps confirm it.

Q3. Which statement about a class is most accurate?

A. Blueprint for creating objects with state and behavior. B. A dict subclass. C. A pure module. D. A function only.

Select an answer to check.

Answer: Blueprint for creating objects with state and behavior.

The best option here is Blueprint for creating objects with state and behavior.. Defined with class keyword. It aligns directly with what the question asks about which statement about a class is most accurate. A quick elimination of partially true options helps confirm it.

Q4. How is a class best characterized?

A. A dict subclass. B. A pure module. C. A function only. D. Blueprint for creating objects with state and behavior.

Select an answer to check.

Answer: Blueprint for creating objects with state and behavior.

For this question, Blueprint for creating objects with state and behavior. is correct. Defined with class keyword. It aligns directly with what the question asks about how is a class best characterized. A quick elimination of partially true options helps confirm it.

Q5. Which option best describes an instance in Python?

A. A class itself. B. A namespace. C. An object created from a class. D. A module.

Select an answer to check.

Answer: An object created from a class.

An object created from a class. is the correct answer here. Has its own attributes. It aligns directly with what the question asks about which option best describes an instance in python. A quick elimination of partially true options helps confirm it.

Q6. What is the primary purpose of an instance?

A. A namespace. B. A module. C. A class itself. D. An object created from a class.

Select an answer to check.

Answer: An object created from a class.

Here, An object created from a class. is the right choice. Has its own attributes. This matches the core idea being tested around what is the primary purpose of an instance. A quick elimination of partially true options helps confirm it.

Q7. Which statement about an instance is most accurate?

A. A class itself. B. An object created from a class. C. A namespace. D. A module.

Select an answer to check.

Answer: An object created from a class.

In this case, An object created from a class. is correct. Has its own attributes. This matches the core idea being tested around which statement about an instance is most accurate. A quick elimination of partially true options helps confirm it.

Q8. How is an instance best characterized?

A. An object created from a class. B. A namespace. C. A module. D. A class itself.

Select an answer to check.

Answer: An object created from a class.

The best option here is An object created from a class.. Has its own attributes. This matches the core idea being tested around how is an instance best characterized. A quick elimination of partially true options helps confirm it.

Q9. Which option best describes __init__ in Python?

A. The constructor itself. B. A class-level method. C. Initializer called after object creation. D. A finalizer.

Select an answer to check.

Answer: Initializer called after object creation.

For this question, Initializer called after object creation. is correct. Initializes state on self. This matches the core idea being tested around which option best describes __init__ in python. A quick elimination of partially true options helps confirm it.

Q10. What is the primary purpose of __init__?

A. Initializer called after object creation. B. A finalizer. C. A class-level method. D. The constructor itself.

Select an answer to check.

Answer: Initializer called after object creation.

Initializer called after object creation. is the correct answer here. Initializes state on self. This matches the core idea being tested around what is the primary purpose of __init__. A quick elimination of partially true options helps confirm it.

Q11. Which statement about __init__ is most accurate?

A. The constructor itself. B. Initializer called after object creation. C. A finalizer. D. A class-level method.

Select an answer to check.

Answer: Initializer called after object creation.

Here, Initializer called after object creation. is the right choice. Initializes state on self. That is exactly the concept behind which statement about __init__ is most accurate in this context. A quick elimination of partially true options helps confirm it.

Q12. How is __init__ best characterized?

A. A finalizer. B. The constructor itself. C. A class-level method. D. Initializer called after object creation.

Select an answer to check.

Answer: Initializer called after object creation.

In this case, Initializer called after object creation. is correct. Initializes state on self. That is exactly the concept behind how is __init__ best characterized in this context. A quick elimination of partially true options helps confirm it.

Q13. Which option best describes self in Python?

A. Always None. B. Reference to the current instance. C. A class object. D. A static reference.

Select an answer to check.

Answer: Reference to the current instance.

The best option here is Reference to the current instance.. Convention; not a keyword. That is exactly the concept behind which option best describes self in python in this context. A quick elimination of partially true options helps confirm it.

Q14. What is the primary purpose of self?

A. A static reference. B. A class object. C. Reference to the current instance. D. Always None.

Select an answer to check.

Answer: Reference to the current instance.

For this question, Reference to the current instance. is correct. Convention; not a keyword. That is exactly the concept behind what is the primary purpose of self in this context. A quick elimination of partially true options helps confirm it.

Q15. Which statement about self is most accurate?

A. Always None. B. A static reference. C. Reference to the current instance. D. A class object.

Select an answer to check.

Answer: Reference to the current instance.

Reference to the current instance. is the correct answer here. Convention; not a keyword. That is exactly the concept behind which statement about self is most accurate in this context. A quick elimination of partially true options helps confirm it.

Q16. How is self best characterized?

A. Reference to the current instance. B. Always None. C. A static reference. D. A class object.

Select an answer to check.

Answer: Reference to the current instance.

Here, Reference to the current instance. is the right choice. Convention; not a keyword. It fits the requirement in the prompt about how is self best characterized. A quick elimination of partially true options helps confirm it.

Q17. Which option best describes a class attribute in Python?

A. An instance attribute on self. B. Attribute defined on the class, shared by instances. C. A function-local var. D. A module variable.

Select an answer to check.

Answer: Attribute defined on the class, shared by instances.

In this case, Attribute defined on the class, shared by instances. is correct. Beware mutable defaults. It fits the requirement in the prompt about which option best describes a class attribute in. A quick elimination of partially true options helps confirm it.

Q18. What is the primary purpose of a class attribute?

A. An instance attribute on self. B. A module variable. C. Attribute defined on the class, shared by instances. D. A function-local var.

Select an answer to check.

Answer: Attribute defined on the class, shared by instances.

The best option here is Attribute defined on the class, shared by instances.. Beware mutable defaults. It fits the requirement in the prompt about what is the primary purpose of a class. A quick elimination of partially true options helps confirm it.

Q19. Which statement about a class attribute is most accurate?

A. An instance attribute on self. B. A module variable. C. A function-local var. D. Attribute defined on the class, shared by instances.

Select an answer to check.

Answer: Attribute defined on the class, shared by instances.

For this question, Attribute defined on the class, shared by instances. is correct. Beware mutable defaults. It fits the requirement in the prompt about which statement about a class attribute is most. A quick elimination of partially true options helps confirm it.

Q20. How is a class attribute best characterized?

A. A function-local var. B. An instance attribute on self. C. Attribute defined on the class, shared by instances. D. A module variable.

Select an answer to check.

Answer: Attribute defined on the class, shared by instances.

Attribute defined on the class, shared by instances. is the correct answer here. Beware mutable defaults. It fits the requirement in the prompt about how is a class attribute best characterized. A quick elimination of partially true options helps confirm it.

Q21. Which option best describes an instance attribute in Python?

A. Stored in instance __dict__. B. A class-level attribute. C. A module variable. D. A function-local var.

Select an answer to check.

Answer: Stored in instance __dict__.

Here, Stored in instance __dict__. is the right choice. Set on self. This is the most accurate statement for which option best describes an instance attribute in. A quick elimination of partially true options helps confirm it.

Q22. What is the primary purpose of an instance attribute?

A. A class-level attribute. B. Stored in instance __dict__. C. A module variable. D. A function-local var.

Select an answer to check.

Answer: Stored in instance __dict__.

In this case, Stored in instance __dict__. is correct. Set on self. This is the most accurate statement for what is the primary purpose of an instance. A quick elimination of partially true options helps confirm it.

Q23. Which statement about an instance attribute is most accurate?

A. Stored in instance __dict__. B. A function-local var. C. A class-level attribute. D. A module variable.

Select an answer to check.

Answer: Stored in instance __dict__.

The best option here is Stored in instance __dict__.. Set on self. This is the most accurate statement for which statement about an instance attribute is most. A quick elimination of partially true options helps confirm it.

Q24. How is an instance attribute best characterized?

A. A class-level attribute. B. A function-local var. C. A module variable. D. Stored in instance __dict__.

Select an answer to check.

Answer: Stored in instance __dict__.

For this question, Stored in instance __dict__. is correct. Set on self. This is the most accurate statement for how is an instance attribute best characterized. A quick elimination of partially true options helps confirm it.

Q25. Which option best describes @classmethod in Python?

A. Method receiving the class as first arg (cls). B. An instance method. C. @staticmethod (no implicit arg). D. A function-local helper.

Select an answer to check.

Answer: Method receiving the class as first arg (cls).

Method receiving the class as first arg (cls). is the correct answer here. Used for alternative constructors. This is the most accurate statement for which option best describes @classmethod in python. A quick elimination of partially true options helps confirm it.

Q26. What is the primary purpose of @classmethod?

A. @staticmethod (no implicit arg). B. A function-local helper. C. An instance method. D. Method receiving the class as first arg (cls).

Select an answer to check.

Answer: Method receiving the class as first arg (cls).

Here, Method receiving the class as first arg (cls). is the right choice. Used for alternative constructors. It aligns directly with what the question asks about what is the primary purpose of @classmethod. The other options are either incomplete or contextually incorrect.

Q27. Which statement about @classmethod is most accurate?

A. @staticmethod (no implicit arg). B. A function-local helper. C. Method receiving the class as first arg (cls). D. An instance method.

Select an answer to check.

Answer: Method receiving the class as first arg (cls).

In this case, Method receiving the class as first arg (cls). is correct. Used for alternative constructors. It aligns directly with what the question asks about which statement about @classmethod is most accurate. The other options are either incomplete or contextually incorrect.

Q28. How is @classmethod best characterized?

A. An instance method. B. Method receiving the class as first arg (cls). C. A function-local helper. D. @staticmethod (no implicit arg).

Select an answer to check.

Answer: Method receiving the class as first arg (cls).

The best option here is Method receiving the class as first arg (cls).. Used for alternative constructors. It aligns directly with what the question asks about how is @classmethod best characterized. The other options are either incomplete or contextually incorrect.

Q29. Which option best describes @staticmethod in Python?

A. Method without implicit first arg. B. A property. C. An instance method. D. @classmethod.

Select an answer to check.

Answer: Method without implicit first arg.

For this question, Method without implicit first arg. is correct. Logical grouping under a class. It aligns directly with what the question asks about which option best describes @staticmethod in python. The other options are either incomplete or contextually incorrect.

Q30. What is the primary purpose of @staticmethod?

A. @classmethod. B. An instance method. C. Method without implicit first arg. D. A property.

Select an answer to check.

Answer: Method without implicit first arg.

Method without implicit first arg. is the correct answer here. Logical grouping under a class. It aligns directly with what the question asks about what is the primary purpose of @staticmethod. The other options are either incomplete or contextually incorrect.

Q31. Which statement about @staticmethod is most accurate?

A. Method without implicit first arg. B. A property. C. @classmethod. D. An instance method.

Select an answer to check.

Answer: Method without implicit first arg.

Here, Method without implicit first arg. is the right choice. Logical grouping under a class. This matches the core idea being tested around which statement about @staticmethod is most accurate. The other options are either incomplete or contextually incorrect.

Q32. How is @staticmethod best characterized?

A. An instance method. B. @classmethod. C. A property. D. Method without implicit first arg.

Select an answer to check.

Answer: Method without implicit first arg.

In this case, Method without implicit first arg. is correct. Logical grouping under a class. This matches the core idea being tested around how is @staticmethod best characterized. The other options are either incomplete or contextually incorrect.

Q33. Which option best describes a property in Python?

A. A regular method. B. Descriptor turning method into attribute access. C. A class attribute. D. A static method.

Select an answer to check.

Answer: Descriptor turning method into attribute access.

The best option here is Descriptor turning method into attribute access.. Use @property and setter. This matches the core idea being tested around which option best describes a property in python. The other options are either incomplete or contextually incorrect.

Q34. What is the primary purpose of a property?

A. Descriptor turning method into attribute access. B. A regular method. C. A class attribute. D. A static method.

Select an answer to check.

Answer: Descriptor turning method into attribute access.

For this question, Descriptor turning method into attribute access. is correct. Use @property and setter. This matches the core idea being tested around what is the primary purpose of a property. The other options are either incomplete or contextually incorrect.

Q35. Which statement about a property is most accurate?

A. Descriptor turning method into attribute access. B. A static method. C. A regular method. D. A class attribute.

Select an answer to check.

Answer: Descriptor turning method into attribute access.

Descriptor turning method into attribute access. is the correct answer here. Use @property and setter. This matches the core idea being tested around which statement about a property is most accurate. The other options are either incomplete or contextually incorrect.

Q36. How is a property best characterized?

A. A static method. B. A class attribute. C. A regular method. D. Descriptor turning method into attribute access.

Select an answer to check.

Answer: Descriptor turning method into attribute access.

Here, Descriptor turning method into attribute access. is the right choice. Use @property and setter. That is exactly the concept behind how is a property best characterized in this context. The other options are either incomplete or contextually incorrect.

Q37. Which option best describes inheritance in Python?

A. Class derives from a base class. B. A pure mixin. C. A protocol only. D. Composition only.

Select an answer to check.

Answer: Class derives from a base class.

In this case, Class derives from a base class. is correct. Class Sub(Base). That is exactly the concept behind which option best describes inheritance in python in this context. The other options are either incomplete or contextually incorrect.

Q38. What is the primary purpose of inheritance?

A. Class derives from a base class. B. Composition only. C. A protocol only. D. A pure mixin.

Select an answer to check.

Answer: Class derives from a base class.

The best option here is Class derives from a base class.. Class Sub(Base). That is exactly the concept behind what is the primary purpose of inheritance in this context. The other options are either incomplete or contextually incorrect.

Q39. Which statement about inheritance is most accurate?

A. A pure mixin. B. A protocol only. C. Class derives from a base class. D. Composition only.

Select an answer to check.

Answer: Class derives from a base class.

For this question, Class derives from a base class. is correct. Class Sub(Base). That is exactly the concept behind which statement about inheritance is most accurate in this context. The other options are either incomplete or contextually incorrect.

Q40. How is inheritance best characterized?

A. Class derives from a base class. B. Composition only. C. A pure mixin. D. A protocol only.

Select an answer to check.

Answer: Class derives from a base class.

Class derives from a base class. is the correct answer here. Class Sub(Base). That is exactly the concept behind how is inheritance best characterized in this context. The other options are either incomplete or contextually incorrect.

Q41. Which option best describes the MRO in Python?

A. Single-parent only. B. Random method lookup. C. Method Resolution Order via C3 linearization. D. Pure DFS.

Select an answer to check.

Answer: Method Resolution Order via C3 linearization.

Here, Method Resolution Order via C3 linearization. is the right choice. Used for cooperative multiple inheritance. It fits the requirement in the prompt about which option best describes the mro in python. The other options are either incomplete or contextually incorrect.

Q42. What is the primary purpose of the MRO?

A. Pure DFS. B. Method Resolution Order via C3 linearization. C. Single-parent only. D. Random method lookup.

Select an answer to check.

Answer: Method Resolution Order via C3 linearization.

In this case, Method Resolution Order via C3 linearization. is correct. Used for cooperative multiple inheritance. It fits the requirement in the prompt about what is the primary purpose of the mro. The other options are either incomplete or contextually incorrect.

Q43. Which statement about the MRO is most accurate?

A. Random method lookup. B. Method Resolution Order via C3 linearization. C. Pure DFS. D. Single-parent only.

Select an answer to check.

Answer: Method Resolution Order via C3 linearization.

The best option here is Method Resolution Order via C3 linearization.. Used for cooperative multiple inheritance. It fits the requirement in the prompt about which statement about the mro is most accurate. The other options are either incomplete or contextually incorrect.

Q44. How is the MRO best characterized?

A. Pure DFS. B. Method Resolution Order via C3 linearization. C. Single-parent only. D. Random method lookup.

Select an answer to check.

Answer: Method Resolution Order via C3 linearization.

For this question, Method Resolution Order via C3 linearization. is correct. Used for cooperative multiple inheritance. It fits the requirement in the prompt about how is the mro best characterized. The other options are either incomplete or contextually incorrect.

Q45. Which option best describes super() in Python?

A. A metaclass call. B. Calls only the first parent always. C. A class decorator. D. Calls parent class methods cooperatively.

Select an answer to check.

Answer: Calls parent class methods cooperatively.

Calls parent class methods cooperatively. is the correct answer here. Critical with multiple inheritance. It fits the requirement in the prompt about which option best describes super() in python. The other options are either incomplete or contextually incorrect.

Q46. What is the primary purpose of super()?

A. A class decorator. B. Calls only the first parent always. C. Calls parent class methods cooperatively. D. A metaclass call.

Select an answer to check.

Answer: Calls parent class methods cooperatively.

Here, Calls parent class methods cooperatively. is the right choice. Critical with multiple inheritance. This is the most accurate statement for what is the primary purpose of super(). The other options are either incomplete or contextually incorrect.

Q47. Which statement about super() is most accurate?

A. Calls parent class methods cooperatively. B. A class decorator. C. Calls only the first parent always. D. A metaclass call.

Select an answer to check.

Answer: Calls parent class methods cooperatively.

In this case, Calls parent class methods cooperatively. is correct. Critical with multiple inheritance. This is the most accurate statement for which statement about super() is most accurate. The other options are either incomplete or contextually incorrect.

Q48. How is super() best characterized?

A. Calls only the first parent always. B. A class decorator. C. Calls parent class methods cooperatively. D. A metaclass call.

Select an answer to check.

Answer: Calls parent class methods cooperatively.

The best option here is Calls parent class methods cooperatively.. Critical with multiple inheritance. This is the most accurate statement for how is super() best characterized. The other options are either incomplete or contextually incorrect.

Q49. Which option best describes multiple inheritance in Python?

A. Class with more than one base. B. No bases at all. C. Single base only. D. Only mixin pattern.

Select an answer to check.

Answer: Class with more than one base.

For this question, Class with more than one base. is correct. Use sparingly with MRO awareness. This is the most accurate statement for which option best describes multiple inheritance in python. The other options are either incomplete or contextually incorrect.

Q50. What is the primary purpose of multiple inheritance?

A. Only mixin pattern. B. Single base only. C. Class with more than one base. D. No bases at all.

Select an answer to check.

Answer: Class with more than one base.

Class with more than one base. is the correct answer here. Use sparingly with MRO awareness. This is the most accurate statement for what is the primary purpose of multiple inheritance. The other options are either incomplete or contextually incorrect.