PCPP Python Decorators and Metaprogramming Quiz

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3. What does @staticmethod indicate about a method?

It does not receive self or cls as an argument

It cannot be overridden in subclasses

It must be called on the class, not an instance

It is executed only once at class definition

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5. Which of the following is a valid use case for metaprogramming?

Creating an ORM that dynamically generates database model classes

Writing simple arithmetic expressions

Defining static variables in functions

Handling exception messages

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7. In metaprogramming, what does the prepare method in a metaclass do?

Provides a custom namespace for class body execution

Initializes instance variables before __init__

Prepares the class for garbage collection

Validates class inheritance chains

8. Which special method allows you to intercept attribute access that would normally raise AttributeError?

__getattr__

__getattribute__

__getitem__

__get__

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10. What is the difference between a data descriptor and a non-data descriptor?

Data descriptors define __set__ or __delete__; non-data descriptors do not

Data descriptors are faster than non-data descriptors

Data descriptors can only be used with classes

There is no functional difference

11. Which built-in function is used to apply a decorator to a function in Python?

@decorator syntax

Decorator() function

Apply_decorator() method

Wrap_function() method

12. What is a descriptor in Python?

An object that defines __get__, __set__, or __delete__ methods

A type of string used for documentation

A decorator for class methods

A built-in type for handling exceptions

13. Which method of a metaclass is called when a new class is created?

__new__

__init__

__create__

__call__

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15. In metaprogramming, what is a metaclass?

A class whose instances are classes

A class that inherits from multiple base classes

A class used only for inheritance

A class that cannot be instantiated

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17. What does the functools.wraps decorator do when applied to a wrapper function?

Preserves the original function's metadata (name, docstring)

Automatically caches function results

Converts the function to a generator

Enforces thread safety

18. Which of the following correctly implements a simple decorator that counts function calls?

Def decorator(f): def wrapper(*args, **kwargs): wrapper.count += 1; return f(*args, **kwargs); return wrapper

Def decorator(f): f.count = 0; return f

@decorator def wrapper(): pass

Decorator = lambda f: f()

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20. What is the primary purpose of a decorator in Python?

To modify function behavior without changing its source code

To create new classes dynamically

To manage memory allocation

To enforce variable type checking

PCPP Python Decorators and Metaprogramming Quiz

1. Properties in Python are implemented using the descriptor ______.

2.

What first name or nickname would you like us to use?

2. In Python, the call method makes an instance of a class behave like a ______.

3. What does @staticmethod indicate about a method?

4. The @classmethod decorator modifies a method to receive the ______ as its first argument instead of an instance.

5. Which of the following is a valid use case for metaprogramming?

6. A decorator factory is a function that returns a ______ which then acts as a decorator.

7. In metaprogramming, what does the prepare method in a metaclass do?

8. Which special method allows you to intercept attribute access that would normally raise AttributeError?

9. The getattribute method is called ______ an attribute is accessed on an object.

10. What is the difference between a data descriptor and a non-data descriptor?

11. Which built-in function is used to apply a decorator to a function in Python?

12. What is a descriptor in Python?

13. Which method of a metaclass is called when a new class is created?

14. The default metaclass for all Python classes is ______.

15. In metaprogramming, what is a metaclass?

16. A class decorator can modify the behavior of an entire class by wrapping its ____ method.

17. What does the functools.wraps decorator do when applied to a wrapper function?

18. Which of the following correctly implements a simple decorator that counts function calls?

19. In Python, a decorator is fundamentally a ______ that takes a function as input and returns a modified function.

20. What is the primary purpose of a decorator in Python?

PCPP Python Decorators and Metaprogramming Quiz

1. Properties in Python are implemented using the descriptor ______.

2.

What first name or nickname would you like us to use?

2. In Python, the __call__ method makes an instance of a class behave like a ______.

3. What does @staticmethod indicate about a method?

4. The @classmethod decorator modifies a method to receive the ______ as its first argument instead of an instance.

5. Which of the following is a valid use case for metaprogramming?

6. A decorator factory is a function that returns a ______ which then acts as a decorator.

7. In metaprogramming, what does the __prepare__ method in a metaclass do?

8. Which special method allows you to intercept attribute access that would normally raise AttributeError?

9. The __getattribute__ method is called ______ an attribute is accessed on an object.

10. What is the difference between a data descriptor and a non-data descriptor?

11. Which built-in function is used to apply a decorator to a function in Python?

12. What is a descriptor in Python?

13. Which method of a metaclass is called when a new class is created?

14. The default metaclass for all Python classes is ______.

15. In metaprogramming, what is a metaclass?

16. A class decorator can modify the behavior of an entire class by wrapping its ____ method.

17. What does the functools.wraps decorator do when applied to a wrapper function?

18. Which of the following correctly implements a simple decorator that counts function calls?

19. In Python, a decorator is fundamentally a ______ that takes a function as input and returns a modified function.

20. What is the primary purpose of a decorator in Python?

2. In Python, the call method makes an instance of a class behave like a ______.

7. In metaprogramming, what does the prepare method in a metaclass do?

9. The getattribute method is called ______ an attribute is accessed on an object.