A developer is building a framework that must automatically add a `__repr__` method to every class that does not define one. The generated `__repr__` should return a string with the class name and the values of all instance attributes. Which approach should be used?

Use a metaclass that checks if `__repr__` is in the class namespace and, if not, adds a dynamically generated method.

Use `__init_subclass__` to add `__repr__` to each subclass.

Use a class decorator that adds `__repr__` to every class it decorates.

Use `type()` to create classes manually and add `__repr__`.

A developer is writing a script that needs to create a class with a method that returns a constant value. The class name and the constant value are read from a configuration file. Which approach should be used?

Use `type(name, (object,), {'get_value': lambda self: value})` to create the class dynamically.

Use `exec()` with a template string for the class definition.

Use `eval()` to execute a string that defines the class.

Use a dictionary to store the class and its method.

In a metaclass's __new__ method, how can you add a new class variable to the class being created?

By adding a key-value pair to the namespace dictionary passed as an argument.

By calling the class's __init__ method after it is created.

By using the setattr function on the class object after creation.

By modifying the __bases__ tuple to include a mixin class.

Python InstitutePCPP1 - Certified Professional Python Programmer 1

Domain 1Objective 12

PCPP-32-101 1.12 Explain the Concept of Metaprogramming PCPP-32-1 Practice Questions (Page 2)

Part of the Advanced Object-Oriented Programming domain, which accounts for 35% of the PCPP-32-1 exam. Python Institute does not publish an official question count, but from its 65-minute exam (~25–45 total, ~9–16 in this domain), expect 1–1 from this objective — we provide 25 practice questions to prepare you well beyond it. (estimate)

25questions here

5free pages

9concepts

35%of the exam

Questions 6–10

6foundation · easy
Given the following code, what is the output? def greet(): pass print(greet.__name__)
Select an answer first
7expert · medium
A developer is building a framework that must automatically add a `__repr__` method to every class that does not define one. The generated `__repr__` should return a string with the class name and the values of all instance attributes. Which approach should be used?
Select an answer first
8application · medium
A developer is writing a script that needs to create a class with a method that returns a constant value. The class name and the constant value are read from a configuration file. Which approach should be used?
Select an answer first
9foundation · easy
What is the correct way to define a custom metaclass in Python?
Select an answer first
10foundation · easy
In a metaclass's __new__ method, how can you add a new class variable to the class being created?
Select an answer first

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PCPP-32-101 1.12 Explain the Concept of Metaprogramming PCPP-32-1 Practice Questions (Page 2)

Questions 6–10

Given the following code, what is the output? def greet(): pass print(greet.name)

A developer is building a framework that must automatically add a `repr` method to every class that does not define one. The generated `repr` should return a string with the class name and the values of all instance attributes. Which approach should be used?

A developer is writing a script that needs to create a class with a method that returns a constant value. The class name and the constant value are read from a configuration file. Which approach should be used?

What is the correct way to define a custom metaclass in Python?

In a metaclass's new method, how can you add a new class variable to the class being created?

PCPP-32-101 1.12 Explain the Concept of Metaprogramming PCPP-32-1 Practice Questions (Page 2)

Questions 6–10

Given the following code, what is the output? def greet(): pass print(greet.__name__)

A developer is building a framework that must automatically add a `__repr__` method to every class that does not define one. The generated `__repr__` should return a string with the class name and the values of all instance attributes. Which approach should be used?

A developer is writing a script that needs to create a class with a method that returns a constant value. The class name and the constant value are read from a configuration file. Which approach should be used?

What is the correct way to define a custom metaclass in Python?

In a metaclass's __new__ method, how can you add a new class variable to the class being created?

Keep studying — Advanced Object-Oriented Programming

Given the following code, what is the output? def greet(): pass print(greet.name)

A developer is building a framework that must automatically add a `repr` method to every class that does not define one. The generated `repr` should return a string with the class name and the values of all instance attributes. Which approach should be used?

In a metaclass's new method, how can you add a new class variable to the class being created?