Python - Object Oriented: len Magic Method

Published: 18 June 2023
on channel: Affineura

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In this YouTube video, you will explore the basics of the `__len__` magic method in #Python. Without using decorators, this video focuses on teaching you how to implement this special method within your custom #classes.

The `__len__` magic method allows you to define the behavior of the built-in `len()` function when it is applied to an object of your class. By implementing this method, you can determine what `len(object)` should return and provide a customized length for your objects.

Throughout the video, you will learn how to create a class and define the `__len__` method within it. You'll understand the purpose and significance of the method, and how it differs from other magic methods. The video will guide you through the process of writing the code for this method, ensuring you have a clear understanding of the required syntax and logic.

Additionally, the video will provide examples and practical demonstrations to illustrate the usage of the `__len__` method. You will see how to leverage this method to calculate and return the desired length of your custom objects based on your specific requirements.

By the end of this video, you will have a solid understanding of how to use the `__len__` magic method to define the behavior of the `len()` function for your custom classes. This knowledge will enable you to create more intuitive and consistent classes that seamlessly integrate with Python's built-in functions. So, get ready to dive into this fascinating aspect of Python's magic methods and expand your programming capabilities.

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