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  • What is Python?

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  • Python dataclass

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    Summary: in this tutorial, you’ll learn about the Python dataclass decorator and how to use it effectively. Introduction to the Python dataclass Python introduced the dataclass in version 3.7 (PEP 557). The dataclass allows you to define classes with less code and more functionality out of the box. The following defines a regular Person class with two instance attributes name and age:…

  • Python Metaclass Example

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    Summary: in this tutorial, you’ll learn about a Python metaclass example that creates classes with many features. Introduction to the Python metaclass example The following defines a Person class with two attributes name and age: Typically, when defining a new class, you need to: As you can see, it requires a lot of code. Imagine you want to define a…

  • Python Metaclass

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    Summary: in this tutorial, you’ll learn about the Python metaclass and understand how Python uses the metaclasses to create other classes. Introduction to the Python Metaclass A metaclass is a class that creates other classes. By default, Python uses the type metaclass to create other classes. For example, the following defines a Person class: When Python executes the code, it uses…

  • Python type Class

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    Summary: in this tutorial, you’ll learn about the Python type class and understand how Python uses the type class to create other classes. Introduction to the Python type class In Python, a class is an object of the class type. For example, the following defines the Person class with two methods __init__ and greeting: The Person class is an object of the class type as shown in the…

  • Python __new__

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    Summary: in this tutorial, you’ll learn about the Python __new__ method and understand how Python uses it to create a new object. Introduction to the Python __new__ method When you create an instance of a class, Python first calls the __new__() method to create the object and then calls the __init__() method to initialize the object’s attributes. The __new__() is a static method of…

  • Python mixin

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    Summary: in this tutorial, you’ll learn about Python mixin classes and how to use them to make the code reusable. What is a mixin in Python A mixin is a class that provides method implementations for reuse by multiple related child classes. However, the inheritance is not implying an is-a relationship. A mixin doesn’t define a new…

  • Python Multiple Inheritance

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    Summary: in this tutorial, you’ll learn about Python multiple inheritance and how method order resolution works in Python. Introduction to the Python Multiple inheritance. When a class inherits from a single class, you have single inheritance. Python allows a class to inherit from multiple classes. If a class inherits from two or more classes, you’ll have multiple inheritance.…

  • Python Dependency Inversion Principle

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    Summary: in this tutorial, you’ll learn about the Python dependency inversion principle to make your code hi Introduction to the dependency inversion principle The dependency inversion principle is one of the five SOLID principles in object-oriented programming: The dependency inversion principle states that: The dependency inversion principle aims to reduce the coupling between classes by…

  • Python Interface Segregation Principle

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    Summary: in this tutorial, you’ll learn about the interface segregation principle and how to apply it in Python. Introduction to the interface segregation principle The interface segregation principle is one of five SOLID principles in object-oriented programming: An interface is a description of behaviors that an object can do. For example, when you press the…