Python: Check instances and in subclasses a given class

Last update on March 28 2025 12:54:20 (UTC/GMT +8 hours)

8. Create empty classes Student and Marks, instantiate them, and check instance and subclass relationships

Write a Python program to create two empty classes, Student and Marks. Now create some instances and check whether they are instances of the said classes or not. Also, check whether the said classes are subclasses of the built-in object class or not.

Sample Solution:

Python Code:

class Student:
    pass 
class Marks:
    pass 
student1 = Student()
marks1 = Marks()
print(isinstance(student1, Student))
print(isinstance(marks1, Student))
print(isinstance(marks1, Marks)) 
print(isinstance(student1, Marks))
print("\nCheck whether the said classes are subclasses of the built-in object class or not.")
print(issubclass(Student, object))
print(issubclass(Marks, object)) 

Sample Output:

True
False
True
False

Check whether the said classes are subclasses of the built-in object class or not.
True
True

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to define two empty classes and create multiple instances, then use isinstance() to check their types.
• Write a Python program to verify that the empty classes are subclasses of the built-in object class.
• Write a Python program to create instances of two empty classes and compare their types using type() and isinstance().
• Write a Python program to implement a function that takes an instance and prints whether it belongs to a specified class and its base classes.

Python Code Editor:

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