issubclass() — Advanced Examples

Returns True if a class is a subclass of another class

EasyIntermediateAdvancedExpert

issubclass() protocol implementation

Implementing the protocol that issubclass() uses under the hood.

python
# issubclass() - implementing the protocol
class Custom:
    def __issubclass__(self):
        return "custom result"

obj = Custom()
print(issubclass(obj))

Understanding the dunder methods that issubclass() calls helps you customize behavior for your own classes.

Edge cases with issubclass()

Handling unusual inputs and edge cases.

python
# issubclass() edge cases
print("Edge case handling for issubclass()")

# Type checking
print(type(42))

Knowing these edge cases prevents subtle bugs in production.

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