Decorator Functions in Python

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What is a decorator?

A function that changes the behavior of a function without modifying the function itself.

How do you add arguments to decorators?

By adding *args and **kwargs to the inner 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.

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.

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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