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A Guide to Understanding `super()` in Programming
Table of Contents
The term super() appears in several programming languages,each with its own nuances. It’s essential for object-oriented programming, especially when dealing with inheritance.This article breaks down the usage of super() in different contexts.
Understanding `super()` in Java
In Java, the super keyword serves two primary purposes: calling the superclass constructor and referring to a member of the superclass [[1]]. When you use super() with the appropriate arguments,you are essentially invoking the constructor of the parent class (superclass). This allows you to initialize variables inherited from the superclass.
When you call super() with the right arguments, we actually call the constructor Box.
Such as, if you have a class Box with properties like width, height, and depth, a subclass can use super() to initialize these properties using the superclass’s constructor [[1]].
`super()` in Python
Python’s super() function provides a way to access methods of a parent class. It avoids explicitly naming the base class, which can be beneficial, especially in multiple inheritance scenarios [[3]]. The primary advantage of using super() in Python is to handle complex inheritance hierarchies gracefully.
Common Issues with `super()`
One common issue arises when using libraries like Scikit-learn and XGBoost in Python. An error message “‘super’ object has no attribute ‘__sklearn_tags__'” can occur, frequently enough related to compatibility issues between these libraries or the Python version being used [[2]]. This is frequently enough seen when using Python 3.12 with the latest versions of Scikit-learn and XGBoost.
Frequently Asked Questions
- What is the purpose of
super()in Java? - In Java,
super()is used to call the constructor of the superclass and to access members of the superclass [[1]]. - How dose
super()work in Python? - In Python,
super()provides a way to access methods of a parent class without explicitly naming the class, which is useful in multiple inheritance scenarios [[3]]. - What causes the “‘super’ object has no attribute ‘__sklearn_tags__'” error?
- This error often arises due to compatibility issues between libraries like Scikit-learn and XGBoost, or due to the python version being used [[2]].
Sources
- Stack Overflow: super() in Java
- Stack Overflow: ‘super’ object has no attribute ‘__sklearn_tags__’
- Stack Overflow: Understanding Python super() with __init__() methods
- Oracle: Inheritance in Java
- W3Schools: Python Inheritance
- GeeksforGeeks: Java Inheritance
- Real Python: Inheritance and Composition in Python
- ACM Digital Library: Simula Begin
- Computer.org: The History of Simula
- Britannica: Smalltalk
- Computer History Museum: Smalltalk-80
- Oracle: Java Technology
- Python.org: Open Source Summit
- Stack Overflow: developer Survey 2020
- TIOBE Index
