all() — Advanced Playground

Returns True if every element in an iterable is truthy

Python Playground

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

obj = Custom()
print(all(obj))

Output

Click "Run" to execute your code

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

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