issubclass() and isinstance()
Introduction to OOP's
Class
Object
Constructor
Instance Variables
Class Variables
Instance Methods
self Keyword
Encapsulation
Public Members
Protected Members
Private Members
Inheritance
Single Inheritance
Multiple Inheritance
Multilevel Inheritance
Hierarchical Inheritance
Hybrid Inheritance
super() Function
Polymorphism
Method Overriding
Duck Typing
Abstraction
Abstract Class
Abstract Method
Class Method
Static Method
Special Methods
_str_ Method
Operator Overloading
Composition
Aggregation
Association
Method Resolution Order
Object Class
issubclass() and isinstance()
Property Decorator
Setter Method with @property
Destructor
Inner Class
Complete Mini Example
issubclass() and isinstance()
35. issubclass() and isinstance()
Python provides built-in functions to test class relationships and object types in OOP programs. issubclass() checks inheritance, while isinstance() checks whether an object belongs to a class.
Syntax
issubclass(Child, Parent)
isinstance(obj, ClassName)
Example
class Animal:
pass
class Dog(Animal):
pass
obj = Dog()
print(issubclass(Dog, Animal))
print(isinstance(obj, Dog))
print(isinstance(obj, Animal))
Output
True
True
True
Example
Executing...
❌ Error:
✅ Output:
// Click Run ▶ to execute
🏋️ Test Yourself With Exercises
Take our quiz on issubclass() and isinstance() to test your knowledge.
Browse Quizzes »