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

Questions 1–5

1. 1foundation · easy

   Given the following code, what is the output? class Animal: pass a = Animal() print(a.__class__.__name__)

   • AAnimal
   • B<class 'Animal'>
   • Ca
   • Dobject
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2. 2foundation · easy

   What does the __bases__ attribute of a class return?

   • AA list of all ancestor classes in the inheritance hierarchy.
   • BA tuple of the direct base classes of the class.
   • CA string containing the name of the base class.
   • DA dictionary of all class attributes.
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4. 3foundation · easy

   What does the following code create? MyClass = type('MyClass', (object,), {'x': 10})

   • AA new module named MyClass with a variable x set to 10.
   • BA new class named MyClass that inherits from object and has an attribute x set to 10.
   • CA new instance of the class object with an attribute x set to 10.
   • DA new function named MyClass that returns 10 when called.
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5. 4foundation · easy

   Why would a developer use a metaclass in a Python program?

   • ATo replace the need for inheritance in object-oriented design.
   • BTo improve the runtime performance of instance method calls.
   • CTo automatically add methods or attributes to classes when they are defined.
   • DTo manage memory allocation for instances of the class.
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6. 5foundation · easy

   What is a common use of a custom metaclass in metaprogramming?

   • AAdding a new method to every class that uses the metaclass.
   • BChanging the behavior of instance method calls at runtime.
   • CImproving the garbage collection of instances.
   • DReplacing the need for inheritance in the class hierarchy.
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