PCPP-32-101 1.4 Understand Extended Function Argument Syntax and Use Decorators PCPP-32-1 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Given the function `def wrapper(*args, **kwargs): return target(*args, **kwargs)`, what is the primary purpose of using *args and **kwargs in the call to `target`?

   • ATo ignore the arguments and call target with no arguments
   • BTo unpack the collected arguments and pass them to target
   • CTo create new arguments for target
   • DTo convert positional arguments to keyword arguments
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   What is the primary purpose of the __init__ method in a class?

   • ATo initialize the instance's attributes
   • BTo convert the instance to a string
   • CTo make the instance callable
   • DTo delete the instance
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   What is the benefit of using *args and **kwargs when forwarding arguments from one function to another?

   • AIt allows the wrapper to accept any combination of positional and keyword arguments
   • BIt requires the wrapper to know the exact signature of the target function
   • CIt prevents the wrapper from accepting keyword arguments
   • DIt makes the wrapper faster than passing arguments directly
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   What is the primary purpose of a function decorator?

   • ATo delete a function from memory
   • BTo convert a function into a class
   • CTo rename a function
   • DTo modify or enhance the behavior of a function
   Reveal Solution Discussion Select an answer first
6. 25application · easy

   A developer is writing a wrapper function that must forward all arguments to an underlying function. The wrapper is defined as: def wrapper(*args, **kwargs): return target(*args, **kwargs) Which statement about this wrapper is true?

   • AIt forwards both positional and keyword arguments correctly, preserving the original call semantics.
   • BIt fails if target has default parameter values.
   • CIt only forwards positional arguments; keyword arguments are lost.
   • DIt only forwards keyword arguments; positional arguments are lost.
   Reveal Solution Discussion Select an answer first