Nov 11, 2009 · 320 How do I get the length of a list? To find the number of elements in a list, use the builtin function len:

May 2, 2025 · len () function is a built-in Python function and it's the simplest and most efficient way to find the length of a list in Python. It can be used on any sequence or collection, …

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Jul 24, 2025 · How to find the length of a list in Python using the len () function. Includes examples, edge cases, and tips for working with nested or dynamic lists.

To find the length of a list in Python, you pass the list to len(), like len([1, 2, 3]). The len() function operates in constant time, O (1), as it accesses a length attribute in most cases.

Jan 25, 2023 · Don't know how many elements are in a list? This guide shows you three different ways to find the length of a list in Python!

Mar 7, 2025 · Learn how to find the length of a list in Python using the `len ()` function. This quick guide includes practical examples to help you measure list size easily.