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  1. Using the len() Function in Python – Real Python

    In this tutorial, you'll learn how and when to use the len () Python function. You'll also learn how to customize your class definitions so that objects of a user-defined class can be used as arguments in …

  2. Python len () Function - W3Schools

    Definition and Usage The len() function returns the number of items in an object. When the object is a string, the len() function returns the number of characters in the string.

  3. Python len() Function - GeeksforGeeks

    Jul 23, 2025 · The len () function in Python is used to get the number of items in an object. It is most commonly used with strings, lists, tuples, dictionaries and other iterable or container types.

  4. 【Panduan Lengkap Fungsi len () di Python】Penjelasan Mendalam …

    Nov 29, 2025 · Kami akan menjelaskan secara detail cara menggunakan fungsi len () di Python. Mulai dari dasar untuk mendapatkan panjang daftar (list) dan string, hingga penggunaan tingkat lanjut …

  5. Python len Function - Complete Guide - ZetCode

    Apr 11, 2025 · Complete guide to Python's len function covering strings, lists, dictionaries, custom objects, and practical examples.

  6. Python len () Function - Programiz

    In this tutorial, we will learn about the Python len () function with the help of examples.

  7. len () in Python - Built-In Functions with Examples

    The len() function in Python is a built-in function that returns the number of items in a container, such as a string, list, tuple, dictionary, etc. It calculates the length of the object and is commonly used to …

  8. Understanding the `len()` Function in Python - codegenes.net

    Nov 14, 2025 · The len() function in Python is used to return the length (the number of items) of an object. The object can be a sequence (such as strings, lists, tuples) or a collection (such as …

  9. Python | Built-in Functions | len() | Codecademy

    May 23, 2022 · The len() function returns the number of items in an object. It is one of Python’s most commonly used built-in functions that calculates the length or size of various data types including …

  10. Mastering the Python `len()` Function: A Comprehensive Guide

    Mar 10, 2025 · In this blog post, we will explore the fundamental concepts of the len() function, its usage methods, common practices, and best practices to help you make the most of this essential Python …