Decorator Functions in Python
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Questions and Answers

What is a decorator?

  • A function that changes the behavior of a function without modifying the function itself. (correct)
  • A function that changes the behavior of a function with modifying the function itself.
  • A function that changes the behavior of a function with modifying the inner functions.
  • A function that changes the behavior of a function without modifying the inner functions.
  • How do you add arguments to decorators?

  • By adding *args and **kwargs to the decorated functions.
  • By adding *args and **kwargs to the inner functions. (correct)
  • By adding *args and **kwargs to the outer functions.
  • By adding *args and **kwargs to the decorator functions.
  • What is a possible way to fix the issue of the decorator hiding the function it is decorating?

  • By using functools to update the decorator with the decorated function's attributes. (correct)
  • By using functools to update the decorated function with the decorator's attributes.
  • By using functools to update the inner function with the decorator's attributes.
  • By using functools to update the outer function with the decorator's attributes.
  • Study Notes

    • A decorator is a function that changes the behavior of a function without modifying the function itself.
    • To use a decorator, you attach it to a function like you see in the code below.
    • There is also an inner function that wraps around the decorated function.
    • To add arguments to decorators I add *args and **kwargs to the inner functions.
    • Decorators hide the function they are decorating.
    • To fix this issue I will use functools. Functools wraps will update the decorator with the decorated functions attributes.
    • Now I receive the output I am expecting.

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    Description

    This quiz covers the concept of decorator functions in Python, including their purpose, how to use them, and how to fix issues related to hiding the decorated function. It also touches on using functools for updating the decorator with the decorated functions attributes.

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