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Best Python mcq Practice Questions for Core Python Concepts
Why is inheritance used in Python’s object-oriented programming?
a. To build new classes with improved capabilities
b. To allow for code reuse
c. To define hierarchical relationships between classes
d. All of the above
Option d – All of the above
Which keyword is used in Python to define a derived class?
a. class
b. child
c. subclass
d. extend
Option a – class
What form of inheritance lets a class derive features from more than one parent class in Python?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
What form of inheritance allows a class to receive attributes and methods from just one direct parent class?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option a – Single inheritance
When a child class inherits from multiple parent classes that define the same method, which version is executed in Python?
a. The one from the first parent class listed
b. The one from the last parent class listed
c. Every version of the method is executed
d. An error will occur
Option b – The one from the last parent class listed
Which keyword lets you invoke a parent class’s method from within a subclass in Python?
a. super
b. parent
c. Base
d. self
Option a – super
What type of inheritance involves a continuous chain of classes where each class inherits from the one above it?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option c – Multilevel inheritance
Can a subclass in Python override a method inherited from its parent class?
a. Yes, and the new method will replace the one in the parent
b. No, inherited methods are read-only
c. Only if the subclass is also used as a parent class
d. That depends on the method’s access control
Option a – Yes, and the new method will replace the one in the parent
Which inheritance model merges several types of inheritance into one?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option d – Hybrid inheritance
Is it possible for a subclass in Python to directly access private attributes or methods of its superclass?
a. Yes, full access is granted to all members of the parent class
b. No, private members are not accessible from child classes
c. Only when both classes are in the same module
d. It depends on how the access permissions are SET
Option b – No, private members are not accessible from child classes
Which inheritance model lets a class inherit properties not only from its direct parent but also from a grandparent class?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
Can a subclass in Python inherit from multiple parent classes that define the same attribute names?
a. Yes, and the subclass will have access to all those attributes
b. No, Python disallows inheritance chains with duplicate attribute names
c. Only in cases where the subclass also functions as a parent class
d. It depends on how the subclass is implemented and how attribute resolution is handled
Option d – It depends on how the subclass is implemented and how attribute resolution is handled
Which Python keyword checks whether one class is derived from another?
a. subclass
b. extends
c. issubclass
d. inherits
Option c – issubclass
Is it possible for a subclass in Python to inherit from a class that is already derived from another class?
a. Yes, provided the inheritance hierarchy is correctly structured
b. No, Python restricts classes from inheriting such chains
c. Only if the subclass is also used as a parent class
d. It depends on how the subclass and the inheritance chain are implemented
Option a – Yes, provided the inheritance hierarchy is correctly structured
What kind of inheritance allows a class to derive features from a parent, which is also a subclass of another class?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
Is it allowed for a subclass in Python to redefine the __init__() method of its superclass?
a. Yes, and it will override the parent’s constructor method
b. No, Python doesn’t allow constructor overriding in subclasses
c. Only if the subclass is also a Base class for another class
d. It depends on the method resolution strategy and how the subclass is defined
Option a – Yes, and it will override the parent’s constructor method
Which inheritance pattern lets a Python class inherit from several parent classes, where each parent itself might also inherit from others?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option d – Hybrid inheritance
Can a Python subclass override a method from its parent class and also execute the parent’s version of the method?
a. Yes, by using the super() function
b. No, overriding and invoking the parent method at the same time isn’t allowed
c. Only when the subclass also serves as a parent class
d. It depends on how the method resolution order is implemented in the subclass
Option a – Yes, by using the super() function
Which inheritance type enables a class to inherit from more than one Base class, but without inheriting shared attributes?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
In Python, can private variables of a Base class be inherited by its child class?
a. Yes, child classes have access to private members from the parent
b. No, private members are not accessible by subclasses
c. Only if those private variables are instead marked as protected
d. It depends on the access control and class structure
Option b – No, private members are not accessible by subclasses
Which inheritance model allows a class to receive properties from its parent class but not its methods?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option a – Single inheritance
What kind of inheritance lets a class receive attributes from multiple parent classes without inheriting their methods?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
In Python, if a child class inherits from several parent classes that define the same method, what happens?
a. Yes, and it will execute all methods sharing the same name
b. No, Python prevents conflicting methods in the inheritance hierarchy
c. Only if the child class also functions as a parent class
d. It depends on how the child class is implemented and the method resolution order
Option d – It depends on how the child class is implemented and the method resolution order
Which form of inheritance enables a class to derive features from both its direct parent and its grandparent?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
Are protected members of a parent class accessible within its child class in Python?
a. Yes, child classes can access all parent members, including protected ones
b. No, protected members are not accessible by child classes
c. Only if the parent and child classes exist in the same module
d. It depends on the implementation and access rules defined in the child class
Option a – Yes, child classes can access all parent members, including protected ones
Which inheritance style is applied when a class inherits from multiple parents, and those parents also have their own superclasses?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option d – Hybrid inheritance
Can a child class in Python override a parent class method and still call the original method?
a. Yes, it can use the super() function to do so
b. No, overriding and calling the same method simultaneously is not allowed
c. Only if the child is also defined as a parent class
d. It depends on how the child class is written and how method resolution is managed
Option a – Yes, it can use the super() function to do so
Which inheritance model lets a class acquire functionality from more than one parent class but excludes their attributes?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option b – Multiple inheritance
In Python, is it possible for a child class to inherit private members from its parent?
a. Yes, private members of the parent can be accessed by the child
b. No, private members remain inaccessible to child classes
c. Only if those variables are declared as protected rather than private
d. It depends on how access control is handled in the implementation
Option b – No, private members remain inaccessible to child classes
What kind of inheritance allows a class to receive attributes from its parent class but not its methods?
a. Single inheritance
b. Multiple inheritance
c. Multilevel inheritance
d. Hybrid inheritance
Option a – Single inheritance
Which of the following is a benefit of using polymorphism in Python?
a. It helps manage memory more efficiently
b. It makes code easier to troubleshoot
c. It prevents the reuse of code
d. It adds unnecessary complexity to programs
Option b – It makes code easier to troubleshoot
Which of the following illustrates polymorphism in Python?
a. A Base class has a method that is redefined in its subclass
b. Implementing multiple inheritance in a program
c. Hiding data inside a class
d. Storing different types of values in a single list
Option a – A Base class has a method that is redefined in its subclass
Which option does not represent a form of polymorphism in Python?
a. Compile-time polymorphism
b. Runtime polymorphism
c. Operator polymorphism
d. Static polymorphism
Option c – Operator polymorphism
What describes compile-time polymorphism in Python?
a. A type of polymorphism handled during compilation
b. A type of polymorphism that happens during runtime
c. A process that occurs while a program is running
d. A way to manage errors in Python
Option a – A type of polymorphism handled during compilation
What defines runtime polymorphism in Python?
a. Polymorphism that is determined during compilation
b. Polymorphism that is handled while the program is running
c. Polymorphism that occurs during code execution
d. A looping mechanism in Python
Option b – Polymorphism that is handled while the program is running
How does method overloading differ from method overriding?
a. Overloading involves creating methods with the same name but different arguments, while overriding means redefining a parent class method in the child class
b. Overloading means redefining a method in the subclass, whereas overriding allows for multiple method definitions with different parameters
c. Both overloading and overriding are identical concepts in Python
d. Neither overloading nor overriding relates to polymorphism
Option a – Overloading involves creating methods with the same name but different arguments, while overriding means redefining a parent class method in the child class
What is a decorator in Python?
a. A special type of function used to alter the behavior of other functions or classes
b. A tool used to improve the design of a graphical interface
c. A feature to make Python output visually appealing
d. A styling element for creating animations in graphics programs
Option a – A special type of function used to alter the behavior of other functions or classes
Which symbol is used to implement a decorator in Python?
a. @
b. $
c. #
d. !
Option a – @
What is the role of decorators in Python programming?
a. To enhance or modify the functionality of an existing function or class
b. To rename a class or function
c. To disable certain features of a class or function
d. To hide access to a function or class
Option a – To enhance or modify the functionality of an existing function or class
Which statement correctly describes Python decorators?
a. They work exclusively with functions and not with classes
b. They can only affect how a function works, not its input or output
c. They can be used within each other
d. They can only be written inside a class, not outside it
Option c – They can be used within each other
Why are decorators useful when working with method chaining?
a. Decorators can dynamically introduce new methods to a class during program execution
b. Decorators enable altering how existing class methods behave
c. Decorators allow adjustments to either the input or output of functions that are part of a chained call
d. Decorators are not relevant for implementing method chaining in Python
Option c – Decorators allow adjustments to either the input or output of functions that are part of a chained call
Which keyword is used to declare a decorator in Python?
a. decorator
b. def
c. class
d. decorate
Option b – def
Is it possible to use decorators on classes in Python?
a. Yes, decorators are applicable to both functions and classes
b. No, Python allows decorators only for functions
c. Yes, but this works only when the class is marked as a static method
d. No, Python does not support class decorators
Option a – Yes, decorators are applicable to both functions and classes
How can decorators assist with handling exceptions in Python?
a. Decorators can be implemented to catch and manage errors raised by a function automatically
b. Decorators can block all exceptions triggered by a function or method
c. Decorators are not usable for managing exceptions in Python
d. Decorators can be designed to raise custom exceptions based on specific criteria
Option a – Decorators can be implemented to catch and manage errors raised by a function automatically
Is it possible for a decorator to change the return value of a function?
a. Yes, decorators have the ability to alter the value returned by a function
b. No, return values cannot be modified using decorators
c. Yes, but only when used with methods in a class
d. No, decorators are limited to changing function parameters only
Option a – Yes, decorators have the ability to alter the value returned by a function
What is one way decorators help measure how long a function takes to run in Python?
a. They can track the start and end times of a function and compute the total execution duration
b. They can show a progress bar to indicate the function’s running time
c. They can restrict how long a function is allowed to run
d. They are not capable of timing function execution in Python
Option a – They can track the start and end times of a function and compute the total execution duration
How is a static method defined in Python?
a. A method usable only by instances of a class
b. A function that is included in a class
c. A method that can be accessed through the class itself rather than its instances
d. A function that can only be accessed from abstract classes
Option c – A method that can be accessed through the class itself rather than its instances
Which decorator is used to define a static method?
a. @classmethod
b. @staticmethod
c. @instance_method
d. None of the above
Option b – @staticmethod
When should a static method typically be used in Python?
a. When creating a new object from a class
b. When performing operations related to class-level variables
c. When writing methods intended to be private
d. When implementing functionality that doesn’t depend on instance-specific data
Option d – When implementing functionality that doesn’t depend on instance-specific data
We covered all the Best Python mcq Practice Questions for Core Python Concepts above in this post for free so that you can practice well for the exam.
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