Python __eq__ Summary: in this tutorial, you’ll learn how to use the Python __eq__ method to compare two objects by their values. Introduction to the Python __eq__ method Suppose that you have the following Person class with three instance attributes: first_name, last_name, and age: class Person: def __init__(self, first_name, last_name, age): self.first_name = first_name self.last_name…
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Python __repr__ Summary: in this tutorial, you’ll learn how to use the Python __repr__ dunder method and the difference between the __repr__ and __str__ methods. Introduction to the Python __repr__ magic method The __repr__ dunder method defines behavior when you pass an instance of a class to the repr(). The __repr__ method returns the string…
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Python __str__ Summary: in this tutorial, you’ll learn how to use the Python __str__ method to make a string representation of a class. Introduction to the Python __str__ method Let’s start with the Person class: class Person: def __init__(self, first_name, last_name, age): self.first_name = first_name self.last_name = last_name self.age = age Code language: Python (python)…
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Python Static Methods Summary: in this tutorial, you’ll learn about Python static methods and how to use them to create a utility class. Introduction to Python static methods So far, you have learned about instance methods that are bound to a specific instance. It means that instance methods can access and modify the state of…
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Python Class Attributes Summary: in this tutorial, you’ll learn about the Python class attributes and when to use them appropriately. Introduction to class attributes Let’s start with a simple Circle class: class Circle: def __init__(self, radius): self.pi = 3.14159 self.radius = radius def area(self): return self.pi * self.radius**2 def circumference(self): return 2*self.pi * self.radius Code…
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Python Private Attributes Summary: in this tutorial, you’ll learn about encapsulation and how to use private attributes to accomplish encapsulation in Python. Introduction to encapsulation in Python Encapsulation is one of the four fundamental concepts in object-oriented programming including abstraction, encapsulation, inheritance, and polymorphism. Encapsulation is the packing of data and functions that work on…
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Python Instance Variables Summary: in this tutorial, you’ll learn about Python instance variables including data variables and function variables. Introduction to the Python instance variables In Python, class variables are bound to a class while instance variables are bound to a specific instance of a class. The instance variables are also called instance attributes. The…
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Python __init__ Summary: in this tutorial, you’ll learn how to use the Python __init__() method to initialize object’s attributes. Introduction to the Python __init__() method When you create a new object of a class, Python automatically calls the __init__() method to initialize the object’s attributes. Unlike regular methods, the __init__() method has two underscores (__)…
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Python Methods Summary: in this tutorial, you’ll learn about Python methods and the differences between functions and methods. Introduction to the Python methods By definition, a method is a function that is bound to an instance of a class. This tutorial helps you understand how it works under the hood. The following defines a Request…
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Python Class Variables Summary: in this tutorial, you’ll learn how the Python class variables (or attributes) work. Introduction to the Python class variables Everything in Python is an object including a class. In other words, a class is an object in Python. When you define a class using the class keyword, Python creates an object…
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