Check if Class is Subclass in Python with issubclass()

To check if a class is a subclass in Python, the easiest way is with the issubclass() function.

class Fruit:
    pass

class Apple(Fruit):
    pass

print(issubclass(Apple,Fruit))
print(issubclass(Fruit,Apple))

#Output:
True
False

When working in Python, the ability to perform certain checks in our program is valuable.

One such check is if you want to check if a class is a subclass in Python.

To check if a class is a subclass in Python, the easiest way is with the issubclass() function.

issubclass() allows you to check if a class is a subclass of another class (or tuple of classes) or not.

issubclass() returns True if the given class is the subclass of given class else it returns False.

Below is a simple example showing you how to check if a class is a subclass or not using Python.

class Fruit:
    pass

class Apple(Fruit):
    pass

class GrannySmith(Apple):
    pass

print(issubclass(Apple,Fruit))
print(issubclass(Fruit,Apple))
print(issubclass(GrannySmith,Apple))
print(issubclass(Apple,GrannySmith))
print(issubclass(Fruit,GrannySmith))
print(issubclass(GrannySmith,Fruit))

#Output:
True
False
True
False
False
True

Hopefully this article has been useful for you to learn how to check if a class is a subclass of another class in Python.