isinstance() — Advanced Playground

Returns True if an object is an instance of a given class or tuple of classes

Python Playground

# isinstance() - implementing the protocol
class Custom:
    def __isinstance__(self):
        return "custom result"

obj = Custom()
print(isinstance(obj))

Output

Click "Run" to execute your code

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

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

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