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 …

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.

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.

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.

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 …

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

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 …

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 …

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

Nov 11, 2009 · Return the length (the number of items) of an object. The argument may be a sequence (such as a string, bytes, tuple, list, or range) or a collection (such as a dictionary, set, or frozen set). …