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 …

Jun 23, 2025 · Learn how to use Python len () to count elements in strings, lists, and more. See examples, common errors, and how to use len () with custom classes.

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.

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 …

Apr 11, 2025 · This comprehensive guide explores Python's len function, which returns the number of items in a container. We'll cover built-in types, custom objects, and practical …

The Python len() function returns the number of elements in an object such as a list, string, tuple, dictionary, or any collection that implements a length property.

Oct 26, 2025 · Learn what the len function does in Python, how to use it with lists, strings, and objects. Explore syntax, meaning, and coding examples.

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