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.

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 …

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.

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 …

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

Jun 23, 2025 · Learn how to use the Python len () function to quickly find the size of strings, lists, dictionaries, and other data structures. Discover practical examples and common mistakes to …

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

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 …

In this tutorial, you will learn how to use the Python len () function to get the number of items of an object.

Master the Python len () function with examples for lists, strings, dictionaries, arrays, and custom objects. Learn syntax, edge cases, and performance.