Python `len()` Function Overview

Definition

The len() function returns the number of items in an object.
For strings, it returns the number of characters.

Syntax

len(object)

object: Required parameter. Must be a sequence (like a string, bytes, tuple, list, or range) or a collection (like a dictionary, set, or frozen set).

Examples

List Example

mylist = ["apple", "banana", "cherry"]
x = len(mylist)  # Returns 3

String Example

mystring = "Hello"
x = len(mystring)  # Returns 5

Additional Resources

W3Schools Python Built-in Functions
Python String Methods
Python List Methods

Study and Practice

Practice using the len() function with different Python sequences and collections to understand its general use.
Explore more Python tutorials and examples on W3Schools.

Certification and Learning Paths

Python Certification Exam available for those interested in validating their Python skills.

This guide provides an overview of how to use the len() function in Python, offering examples and syntax details to support learning and application.

Overview of Python's len() Function

Python len() Function Overview

Definition

Syntax

Examples

List Example

String Example

Additional Resources

Study and Practice

Certification and Learning Paths

Python `len()` Function Overview