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In this video we look at how to use the __len__ dunder In this YouTube video, you will explore the basics of the `__len__` magic In todays session we'll be looking at how to rebuild the Often you'll need to find the number of items stored in a data structure. How to use the __len__ magic method (i.e. dunder method) in our courses: Java Spring Boot AI Live Course: Coupon: TELUSKO20 (20% ...

In this video we are going to further add extra useless feature to CPython source code - at the end of the video we will have ...

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Making the len function work on your Python objects
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Making the len function work on your Python objects

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Want the built-in `

Python 3 - Implement len() in your Classes with __len__
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Python 3 - Implement len() in your Classes with __len__

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In this video we look at how to use the __len__ dunder

Beginner Python Tutorial 28 - len() Function
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Beginner Python Tutorial 28 - len() Function

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python: len(x) vs x.__len__() (beginner - intermediate) anthony explains #131
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python: len(x) vs x.__len__() (beginner - intermediate) anthony explains #131

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today I talk about the difference between

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Last Updated: May 27, 2026

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