Question 1 of 5
What makes an instance callable?
An instance becomes callable when its class defines __call__().
An instance becomes callable when its class defines __call__().
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Quick Check: Python Callable Objects and __call__
Check your understanding of callable instances, __call__, state, and call behavior.
5 questions
~5 min
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Knowledge check
Quick Check: Python Callable Objects and __call__
Check your understanding of callable instances, __call__, state, and call behavior.
- Stuck? Each question has an optional hint.
- Skip a hard question and review it before your results.
- Questions and answer options can shuffle between attempts.
You can retake this quiz whenever you like.
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Question 2 of 5
When greet("Mina") calls a Greeter instance, what does self in __call__ refer to?
self is the instance through which the method is called.
self is the instance through which the method is called.
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Question 3 of 5
Why can a callable object be useful instead of a plain function?
A callable object combines function-like call syntax with object state and other attributes.
A callable object combines function-like call syntax with object state and other attributes.
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Question 4 of 5
What does callable(obj) report?
callable() tests whether the object is callable.
callable() tests whether the object is callable.
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Question 5 of 5
How does a subclass normally customize call behavior?
__call__ is an ordinary method for inheritance, so subclasses can override it.
__call__ is an ordinary method for inheritance, so subclasses can override it.
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What makes an instance callable?Hint used
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When greet("Mina") calls a Greeter instance, what does self in __call__ refer to?Hint used
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Why can a callable object be useful instead of a plain function?Hint used
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What does callable(obj) report?Hint used
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How does a subclass normally customize call behavior?Hint used