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 arguments in …

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.

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 avoid …

Python len () is a built in function that returns an integer representing the number of items in the object passed as argument to it. len () function can find the length of a string, bytes, list, range, dictionary, …

Oct 26, 2025 · What is the Len Function in Python? The len function in Python is a built-in utility that returns the number of items in a container, such as lists, tuples, strings, and dictionaries. …

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

Jan 27, 2024 · In Python, the built-in len() function returns the length (the number of items) of objects of various types, such as lists and strings. Built-in Functions - len () — Python 3.12.1 documentation

Python len function finds length or total number of items in object. Lets use Python len function on string, Tuple, List, Dictionary, Sets.

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 …