Nov 16, 2024 · To get the length of a string in Python, you use len() with the string as an argument, like len("example"). To find the length of a list in Python, you pass the list to len(), like len([1, 2, 3]). The len() function operates in constant time, O …

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.

Apr 15, 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. It returns an integer value representing the length or the number of elements. Example: Explanation: The string “GeeksforGeeks” has 13 characters.

Mar 22, 2025 · What is len() in Python? The len() function in Python is used to calculate the length of an object. In Python, many data structures such as strings, lists, tuples, sets, and dictionaries have a concept of length. The len() function returns an integer value representing the number of items in the given object.

By implementing .__len__(), you enable your custom class to work seamlessly with the len() function, providing a way to determine the number of items it contains. In this tutorial, you'll learn how and when to use the len () Python function.

Jan 5, 2025 · What is Len() function in Python? The len() function in Python is used to quickly determine the length or the number of items in a collection, such as a string, list, tuple, dictionary, or any other iterable object.

What is Python len () Function? Python len() is a built-in function that acts as a virtual measuring tool in Python. It enables you measure to the length of various data structures, unveiling the quantity of elements encompassed within. This could encompass characters within a string, entries within a list, or even keys within a dictionary.

Summary: in this tutorial, you will learn how to use the Python len() function to get the number of items of an object. The len() function returns the number of items (length) of an object. Here’s the syntax of the len() function: In this syntax, the s is an object that you want to …

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 feature. The len() function in Python is a built - …

Nov 27, 2024 · The len() function is a must-know tool in Python for determining object sizes quickly. It works seamlessly across a variety of built-in data types, such as strings, lists, and dictionaries. With a simple syntax and broad application, len() is indispensable for tasks like validation, slicing, and more.