callable() — Advanced Examples

Returns True if the object appears callable (has __call__)

EasyIntermediateAdvancedExpert

callable() protocol implementation

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

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

obj = Custom()
print(callable(obj))

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

Edge cases with callable()

Handling unusual inputs and edge cases.

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

# Type checking
print(type(42))

Knowing these edge cases prevents subtle bugs in production.

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