PCPP-32-101 1.4 Understand Extended Function Argument Syntax and Use Decorators PCPP-32-1 Practice Questions (Page 3)

Questions 11–15

1. 11expert · hard

   A developer has two decorators: @validate which checks input and raises ValueError if invalid, and @log which logs the function call. They apply them as: @log @validate def process(data): return data * 2 They call process('invalid') and validate raises ValueError. What is the order of execution?

   • Avalidate runs first, then log runs, then process executes.
   • Blog runs, then process executes, then validate raises ValueError.
   • Clog runs first, then validate raises ValueError before process executes.
   • Dprocess executes first, then validate raises ValueError.
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2. 12foundation · easy

   Can the @decorator syntax be applied to classes?

   • AYes, but only with classmethod decorators
   • BNo, decorators only work with functions
   • CNo, the syntax is invalid for classes
   • DYes, classes can be decorated just like functions
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4. 13foundation · easy

   What is the @decorator syntax equivalent to?

   • Afunc = decorator()
   • Bfunc = func(decorator)
   • Cdecorator = func(decorator)
   • Dfunc = decorator(func)
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5. 14foundation · easy

   Which of the following is a common use case for a decorator pattern?

   • ADeleting a function from the module
   • BChanging the function's name
   • CAdding logging to a function
   • DConverting a function to a string
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6. 15foundation · easy

   In a class-based decorator, what is stored in __init__?

   • AThe decorator's name
   • BThe function being decorated
   • CThe arguments passed to the decorated function
   • DThe return value of the decorated function
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