What does super() do in Python classes?

Question

BlackTom AI · Accepted Answer

Delving into the question about what super() does in Python classes, we need to assess each statement in light of how super() is defined and used.
Option 1: 'Defines a static method' — This is incorrect. A static method is created using the @staticmethod decorator and is associated with the class, not through the super() function. super() has nothing to do with defining static methods.
Option 2: 'Inherits all private members' — This is a misconception. Private members in Python are name-mangled (e.g., _ClassName__private) and are not automatically exposed or inherited in any special way by super(). Access to such members depends on their visibility rules and how the class hierarchy is designed; super() does not grant special access to private members.
Option 3: 'Deletes the instance' — This is false. Deleting an instance involves garbage collection or explicit del statements, not the super() function. super() simply provides a proxy to access methods of a superclass.
Option 4: 'Refers to the base class' — This is the accurate description. super() returns a proxy object that delegates method calls to the next class in the method resolution order (MRO), i.e., the base class. It is commonly used to call a parent class’s __init__ or other methods (e.g., super().__init__(...) or super().method(...)).
Option 5: 'Returns the current object' — This is not correct. super() does not return the current instance; self is the current instance. super() returns a proxy tied to the next class in the MRO for method lookup.
Option 6: 'Creates a superclass' — This is a misunderstanding. Python does not create a superclass at runtime via super(); the super() function interacts with the existing superclass relationships defined in the class hierarchy. It does not instantiate a new superclass.

In summary, the only statement that accurately describes super() is that it 'refers to the base class' by providing a proxy to access methods of the superclass in the current method resolution order.

What does super() do in Python classes?单项选择题

类似问题

You are given the following abstract class: And the following subclasses: and: Now if we run the following code and the user types in 'O', what is printed by the last call to System.out.println(...):

Consider the following inheritance hierarchy: If we run the following code, what is printed to the screen?

What is inheritance?

Question at position 8 What concept in object-oriented programming allows creating new classes that reuse code from existing classes?StaticGlobalInheritanceEncapsulationClear my selection

Base classes are also called

When a class inherits another class, it is required to use all the data attributes and methods of the superclass.

A superclass inherits attributes and methods from its subclasses without any of them having to be rewritten.

What does the following code output?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单